burned in a grilling session, how many moles of carbon dioxide gas are formed? 8/31/2015. energies: Write a balanced equation describing each of the following chemical reactions. Video \(\PageIndex{1}\): Mixing Potassium Chromate and Silver Nitrate together to initiate a precipitation reaction (Equation \(\ref{4.2.1}\)). II. Instead, you must begin by identifying the various reactions that could occur and then assessing which is the most probable (or least improbable) outcome. NH,SO4 (aq) + BaC2H302 (aq) -- BaSO4(s) + NH4C2H2O2 (aq). 4.6: Precipitation Reactions - Chemistry LibreTexts 3/12 . of water how many moles of oxygen gas are needed? calcium hydroxide and hydrochloric acid net ionic equation. Blocks are assembled into a house. Write the balanced equation, include states, for the reaction between solutions of: a) potassium hydroxide and lead(II) nitrate (Click for the solution to a) b) lead(II) nitrate and iron(II) sulfate c) ammonium sulfate and barium chloride d) copper(II) sulfate and sodium carbonate e) silver nitrate and sodium chloride of H2 that would be produced when 3.5 moles of AlCl3 are produced? Consider the reaction shown: Both potassium chloride and nitrous acid are soluble. 5. The slope of the line is (a) the shortest wavelength of the Balmer series. How many molecules are there in 3.00 moles of NH3? 2 (NH4)3PO4(aq) + 3 Ba(NO3)2(aq) Ba3(PO4)2(s) + 6 NH4NO3(aq), 2 (NH4)3PO4(aq) + 3 Ba(NO3)2(aq) Ba3(PO4)2(s) + 6 NH4NO3(aq). Copy Table into your notebook and use Ohm's equation to fill in the blanks. A) if the value of G for a reaction is negative, the reaction is said to be spontaneous. (NH4)2SO4 + BaCl2 = BaSO4 + NH4Cl - ChemiDay.com the rates of the reaction in the forward and reverse directions are exactly equal. Fe2S3 + 4 O2 2 FeO + 3 SO2, n the reaction shown, how many moles of HCl are needed to react with 2.4 moles of Al? The molecular weight of PCl3 is ________ amu. Chem 30A Flashcards | Quizlet Question: State a general equation for a neutralization reaction. If 4.65 moles of propane, C3H8, are the balanced equation for ammonium hydroxide and perchloric acid is given below.NH4OH (aq) + HCl (aq) ---> NH4Cl (aq)+ H2O (l) .Above is the balanced molecular Equation. Write a chemical equation for the double replacement reaction between 7/29/2015. The concept of free energy allows prediction of spontaneity of a process by considering the changes We will discuss solubilities in more detail later, where you will learn that very small amounts of the constituent ions remain in solution even after precipitation of an insoluble salt. Hence, there will be not net ionic equation. As you advance in chemistry, however, you will need to predict the results of mixing solutions of compounds, anticipate what kind of reaction (if any) will occur, and predict the identities of the products. D) when a substance is oxidized its charge (or oxidation number) decreases. Based on the bond energies given for each of the following which is the most stable? C3H8(g) + 5 O2(g) 3 CO2(g) + 4 H2O(l). proceeding without external influence once it has begun. 2 Al(OH)3(aq) + 3 H2SO4(aq) Al2(SO4)3(s) + 6 H2O(l) By changing the scalar number for each molecular formula, the equation may be balanced. For a chemical reaction to occur, all of the following must happen except. FeCl3(aq) + 3 KOH(aq) Fe(OH)3(s) + 3 KCl(aq). See answer (1) Copy. Precipitation reactions are a subclass of exchange reactions that occur between ionic compounds when one of the products is insoluble. 4/7/2015. Sodium acetate + Calcium sulfide Complete . Write the overall equation including the correct designations for the physical state of the substances (s, l, g, aq). Question #0cc56. metabolized by plants. To determine whether a precipitation reaction will occur, we identify each species in the solution and then refer to Table \(\PageIndex{1}\) to see which, if any, combination(s) of cation and anion are likely to produce an insoluble salt. What is the actual yield of the You can use parenthesis () or brackets []. Reactant particles must collide with each other. What is the percent yield if the The active ingredient in many antacid tablets is calcium carbonate, CaCO3. Solution: . E) All of these statements are correct. Fe(NO3)3(aq) + Na2S(aq) arrow Fe2S3(s) + NaNO3(aq) Write a balanced equation for the following reaction: HI(aq) + NaHCO3(aq) arrow; Write a balanced equation for the following reaction: NH3 + O2 arrow N2 + H2O; Complete and balance the following equation. This reaction is ________ because the sign of H is ________. Net Ionic equation? The equation is now balanced because there is an equal amount of substances on the left and the right hand side of the equation. In contrast, because \(\ce{Ag2Cr2O7}\) is not very soluble, it separates from the solution as a solid. Iron Ill Sulfate + Calcium Nitrate ( 8. What is the balanced equation for ammonium carbonate is heated, it decomposes into ammonia gas, carbon dioxide gas, and water vapor? Given: reactants. How many molecules are present in 3.25 mol of C2H6O? (a) Solid potassium chlorate, KClO 3 decomposes to form solid potassium chloride and diatomic oxygen gas (b) Solid aluminium metal reacts with solid diatomic iodine to form solid Al 2 I 6 (c) When solid sodium chloride is added to aqueous sulfuric acid, hydrogen chloride gas and aqueous sodium sulfate are produced. Write the molecular, ionic and net ionic equations. In which of the following is the oxidation number for oxygen equal to zero? Which of the following equations is not balanced? D) they are said to be exergonic. Ca(OH)2(aq)+2HNO3(aq)Ca(NO3)2(aq)+2H2O(l), Ca+(aq)+2OH(aq)+2H+(aq)+2NO3(aq)Ca+(aq)+2NO3(aq)+2H2O(l), Ba(CH3COO)2(aq)+FeSO4(aq)Fe(CH3COO)2(aq)+BaSO4(s), Ba+(aq)+2CH3COO(aq)+Fe2+(aq)+SO42(aq)Fe+2(aq)+2CH3COO(aq)+BaSO4(s), ZnCO3(s)+H2SO4(aq)ZnSO4(aq)+CO2(g)+H2O(l), ZnCO3(s)+2H+(aq)+SO42(aq)Zn2+(aq)+SO42(aq)+CO2(g)+H2O(l), Cu+2(aq)+2NO3(aq)+2H+(aq)+S2(aq)CuS(s)+2H+(aq)+2NO3(aq), Mg(OH)2(s)+2HClO3(aq)Mg(ClO3)2(aq)+2H2O(l), Mg(OH)2(s)+2H+(aq)+2ClO3(aq)Mg+2(aq)+2ClO3(aq)+2H2O(l), 3KCl(aq)+(NH4)3PO4(aq)K3PO4(aq)+3NH4Cl(aq). The molecular equation for the given reaction is. oxidation number is ________. The element chlorine is very reactive as a(an) ________ agent because it readily ________ electrons Bond dissociation energies: 2. zinc acetate and cesium hydroxide. . What is the balanced equation of sodium acetate and barium nitrate? Although soluble barium salts are toxic, BaSO4 is so insoluble that it can be used to diagnose stomach and intestinal problems without being absorbed into tissues. Which of the following conditions characterizes a system in a state of chemical equilibrium? A mole of any compound contains one mole of each kind of atom found in that compound. ________, and the entropy of the system ________. Mix sodium sulfate with barium nitrate.a) Write each - SolvedLib CH4 + 2 O2 CO2 + 2H2O and chromate/dichromate compounds such as Sodiumdichromate compounds such as Sodium All of the statements regarding redox reactions are true except, when a substance is oxidized its charge (or oxidation number) decreases, In a precipitation reaction the insoluble product can be identified by the symbol, Consider the reaction shown and identify the statement that is not true. The six NO3(aq) ions and the six Na+(aq) ions that appear on both sides of the equation are spectator ions that can be canceled to give the net ionic equation: \[\ce{3Ba^{2+}(aq) + 2PO_4^{3-}(aq) \rightarrow Ba_3(PO_4)_2(s)} \nonumber \]. Calculate the % yield of the reaction. When compound A is formed by the reaction of 50.6 g of Fe and 83.8 g of Cl. The most complicated molecule here is C2H5OH, so balancing begins by placing the coefficient 2 before the CO2 to balance the carbon atoms. 4/7/2015. BaC2H3O22. To balance a chemical equation, enter an equation of a chemical reaction and press the Balance button. To find out what is actually occurring in solution, it is more informative to write the reaction as a complete ionic equation showing which ions and molecules are hydrated and which are present in other forms and phases: \[\ce{2Ag^{+}(aq) + 2NO_3^{-} (aq) + 2K^{+}(aq) + Cr_2O_7^{2-}(aq) \rightarrow Ag_2Cr_2O_7(s) + 2K^{+}(aq) + 2NO_3^{-}(aq)}\label{4.2.2a} \]. l. Potassium + Iodine 2. Thus BaSO4 will precipitate according to the net ionic equation, \[Ba^{2+}(aq) + SO_4^{2-}(aq) \rightarrow BaSO_4(s) \nonumber \]. What mass of CO2 Consider the balanced equation shown and identify the statement that is not true. Balanced Equation: Net Ionic Equation: 3. ammonium sulfide and lead (II) nitrate. B) acid-base neutralization Precipitation Reaction Lab - 1333 Words | 123 Help Me gas in the following equation? C) A mole of any compound contains one mole of each kind of atom found in that compound. I. Net Ionic Equation Calculator - ChemicalAid How long will it take for 99%99 \%99% of the same waste to decay? balanced reaction shown. Aluminum + Iodine I O. Based on the reaction shown, which statement is true? P4O10(s) + 6 H2O(l) 4 H3PO4(aq). So, for each element, count its atoms and let both sides be equal. consumed in the reaction? 452 kcal + 4 PCl5(s) P4(s) + 10 Cl2(g) Again, this is a problem, there must be an equal amount of each chemical on both sides. Consider the reaction shown: Use the calculator below to balance chemical equations and determine the type of reaction (instructions). How many moles of NaHCO3 are present in a 2.00 g sample? KHSO4 + (CH3COO)2Ba = BaSO4 + K2SO4 + CH3COOH, (NH4)2SO3 + KMnO4 + H2O = (NH4)2SO4 + MnO2 + KOH, Cu + SiO2 + HNO3 = Cu(NO3)2 + H2O + NO2 + H2SiO3. Aqueous solutions of strontium bromide and aluminum nitrate are mixed. If we wrote the balanced complete ionic equation, we would see this: Chemistry: Molecular Nature Of Matter And Change, Iron reacts rapidly with chlorine gas to form a reddish brown, ionic compound (A), which contains iron in the higher of its two common oxidation states. Balance Net Ionic Equation for the Combination in aqueous - Quizlet A process or reaction which takes in heat from the surroundings is said to be, A process or reaction which releases heat to the surroundings is said to be. In a reaction to produce chlorine gas, the theoretical yield is 25.6g. Q: Write (a) molecular, (b) total ionic, and (c) net ionic equations for each of the following. Calculate the . In the sections that follow, we discuss three of the most important kinds of reactions that occur in aqueous solutions: precipitation reactions (also known as exchange reactions), acidbase reactions, and oxidationreduction reactions. now go with still fate and then we have cobalt sulfide and we need a yeah no coefficients . The molar mass of butane, C4H10, is ________ grams. working solution by adding distilled water to. B) allows us to identify an exothermic reaction. The entropy change of this reaction is ________ and the enthalpy change is ________, so at a very Study with Quizlet and memorize flashcards containing terms like Lead(II) acetate and sodium bromide, Lithium phosphate and calcium sulfide, Potassium chloride and barium hydroxide and more. Enter an equation of an ionic chemical equation and press the Balance button. chem Flashcards | Quizlet Ca(s) + 2 H2O(l) --> Ca(OH)2(aq) + H2(g). B According to Table \(\PageIndex{1}\), ammonium acetate is soluble (rules 1 and 3), but PbI2 is insoluble (rule 4). The net ionic reaction for the balanced equation shown above is, When a solution of iron(III) nitrate is mixed with a solution of sodium hydroxide, a rust colored Mix sodium sulfate with barium nitrate. Answer (1 of 3): Zinc sulfide, ZnS. The idea here is that you're mixing two solutions that contain soluble ionic compounds and you're interested in finding out if an insoluble ionic compound can be formed by the reaction. Compound states [like (s) (aq) or (g)] are not required. Q11E The balanced molecular equations [FREE SOLUTION] | StudySmarter The last column of the resulting matrix will contain solutions for each of the coefficients. This means that the sign of DELTA S is (NH4)2SO3 (aq) + Ba(C2H302)2 (aq) - BaSO3(aq) + NH.C2H3O2 (aq). B) One mole of water contains the same number of molecules as one mole of ammonia. four moles of phosphoric acid solution. Which of the following is always a spectator ion in aqueous chemical reactions? When 450. g of hydrogen was Consider the reaction shown: How to Balance K2SO4 + Ba(NO3)2 = BaSO4 + KNO3 (Potassium sulfate 3/12/2014. Based on the reaction shown, which statement is true? Chemical Equation Balancer Aqueous solutions of barium chloride and lithium sulfate are mixed. Which statement regarding balanced chemical equations is not true? If the reaction occurs, predict the products and write a balanced equation. Accessibility StatementFor more information contact us atinfo@libretexts.orgor check out our status page at https://status.libretexts.org. Number and types of bonds in each molecule: B) having a small value of activation energy. 8/31/2015. Mascagnite + Barium Acetate = Baryte + Ammonium Acetate. V. Cake mix is manufactured from five basic ingredients. Resistance()Potentialdifference(V)Current(A)1200.252701.251102510000011203706.0\begin{matrix} \ {Resistance (\Omega)} & \text{Potential difference (V)} & \text{Current (A)}\\ \text{ } & \text{120} & \text{0.25}\\ \text{270} & \text{ } & \text{1.25}\\ \text{110} & \text{25} & \text{ }\\ \text{1 000 001} & \text{120} & \text{ }\\ \text{370} & \text{ } & \text{6.0}\\ \end{matrix} The unbalanced chemical equation that describes this neutralization reaction looks like this #"CH"_ 3"COOH"_ ((aq)) + "NaOH"_ ((aq)) -> "CH"_ 3"COONa"_ ((aq)) + "H"_ 2"O"_ ((l))# Now, you could check to see if this chemical equation is balanced by counting the number . Reaction rates are determined by all of the following factors except the. Direct substitution is usually the simplest way. Note that \(\ce{K^+ (aq)}\) and \(\ce{NO3^{} (aq)}\) ions are present on both sides of Equation \(\ref{4.2.2a}\) and their coefficients are the same on both sides. E) One mole of bromine, Br2, contains the same number of molecules as one mole of propane, Bond dissociation energies: (a) A barium nitrate solution and a potassium fluoride solution are combined and a precipitate forms. BaSO4 + 2H2O --> Ba (OH)2 + H2SO4. O2 = 119 kcal/mol In the correctly balanced reaction, the coefficient for H2O is: February 22, 2023 . Solve the system. C) the concentrations of the reactants D) All are correct. Solved The balanced equation for the reaction between | Chegg.com C) The molar mass of a diatomic element is its atomic weight in grams times two. 100% (5 ratings) The balanced chemical equatio . Acetic acid, #"CH"_3"COOH"#, will react with sodium hydroxide, #"NaOH"#, to produce sodium acetate, #"CH"_3"COONa"#, and water. CH4 (4 C-H bonds); O2 (1 O=O); (2 C=O bonds); (2 O-H bonds). C3H8. Best study tips and tricks for your exams. All of the statements concerning free energy and spontaneity are true except . How many grams of barium sulfate solid are produced from reacting 18.48 grams of barium chloride with an excess amount of sodium sulfate? The coefficients represent both the basic unit and mole ratios in balanced equations. To simplify comparisons, the energy value of fuels is expressed in units of. Using the equation below, determine how many kilograms of ammonia will be 8/31/2015. In the reaction energy diagrams shown, reaction B is ________, and it occurs ________ reaction B. R Q 5/30/17 - 2342, UNIT 3 Personal and Professional Survival Gui. B) a reducing agent causes another substance to be reduced. All of the statements are true for spontaneous reactions except ________ Li + ________ Br2 ________ LiBr, In the reaction shown, ________ is the oxidizing agent because it ________. aqueous strontium sulfide and aqueous potassium sulfate aqueous strontium sulfide and aqueous potassium sulfate Home Realizacje i porady Bez kategorii aqueous . Calcium hydroxide + Hydrogen phosphate 4. The formula mass of copper(II) chloride is ________ g. The formula weight of Al2(SO4)3 is ________ grams. Both tripotassium phosphate and ammonium chloride are soluble. Write the net ionic equation for any reaction that occurs. from 8.55 mole of nitrogen. ________ KClO3 ________ KCl + ________ O2, When the reaction shown is correctly balanced, the coefficients are: The number of moles of H2O is. Write and balance the overall chemical equation. The solubility and insoluble annotations are specific to the reaction in Equation \ref{4.2.1} and not characteristic of all exchange reactions (e.g., both products can be soluble or insoluble). D) One mole of any compound contains one mole of atoms. C) metal ions are produced when pure metals are oxidized. The balanced equations are produced by the given reactions. Write the overall chemical equation, the complete ionic equation, and the net ionic equation for the reaction of aqueous barium nitrate with aqueous sodium phosphate to give solid barium phosphate and a solution of sodium nitrate. B) One mole of solid tetraphosphorus decaoxide reacts with six moles of liquid water to produce View the full answer. acetate is. Aqueous solutions of rubidium hydroxide and cobalt(II) chloride are mixed. Recyclable plastics are sorted. Nano-fertilizers (NFs) application may be a promising solution for combat these challenges. N2 + O2 2 NO H = 43.2 kcal. Barium chloride + Aluminum sulfate 2. 4.2: Precipitation Reactions - Chemistry LibreTexts Because ionic substances such as \(\ce{AgNO3}\) and \(\ce{K2Cr2O7}\) are strong electrolytes (i.e., they dissociate completely in aqueous solution to form ions). This precipitate is probably, All of the statements regarding redox reactions are true except. This equation is a balanced equation because there is an equal number of atoms of each element on the left and right hand sides of the equation. How many moles is this? Ni(s) + CuCl2(aq) Cu(s) + NiCl2(aq), When the reaction shown is correctly balanced, the coefficients are: 105 g of MgCl2 contains ________ mol MgCl2. On the left hand side there are 2 O atoms and the right hand side only has one. If a precipitate forms, write the net ionic equation for the reaction. Sodium dichromate with sulfuric acid chromium compounds. Medical search E) One mole of sodium contains the same number of atoms as one mole of carbon. will be produced when 125 g of C8H18 react completely in the following equation? reacted with nitrogen, 1575 g of ammonia were produced. H8N2O4S + Ba(C2H3O2)2 = BaO4S + NH4C2H3O2 - Chemical Equation Balancer Consider the reaction when aqueous solutions of barium sulfide and potassium acetate are combined. 2 Al + 6 HCl -> 2 AlCl3 + 3 H2, 3 moles H2 Which of the following equations is not balanced? -55.2 kcal. Chemical Reactions and Equations - Chemistry | Socratic ________ HNO3 + ________ KOH ________ KNO3 + ________ H2O, Reduction is the process of The balanced equation for the reaction between aqueous ammonium sulfate and aqueous barium acetate is (NH4)2SO4 (aq) + Ba(C2H302)2 (aq) - Baso, (aq) + 2 NH.C2H2O2 (s). Crystals grow from a sugar solution. we nd that when an aqueous solution of barium chloride (BaCl 2 ) is added to an aqueous solution of sodium sulfate (Na 2 SO 4 ), a white precipitate is formed (Figure . Hence Co(OH)2 will precipitate according to the following net ionic equation: \(Co^{2+}(aq) + 2OH^-(aq) \rightarrow Co(OH)_2(s)\). Balanced symbol equation . Solid lead(II) acetate is added to an aqueous solution of ammonium iodide. Map: Chemistry - The Central Science (Brown et al. Balanced Equation: Net Ionic Equation: More Practice - Predicting and Balancing Equations Worksheet. Is sodium bicarbonate a strong or weak base? A chemist makes 630.mL of barium acetate BaC2H3O22 working solution Mothballs vaporize in a closet. Calculate the pH\mathrm{pH}pH of the solution at 25C25^{\circ} \mathrm{C}25C. monoxide? Thus, each side of the equation must represent the same quantity of any particular element. Language: ru es . dioxide, CO2. The balanced equation for the reaction between aqueous ammonium sulfate and aqueous barium acetate is NH4)2SO4(aq) + Ba(C2H3O2)2(aq) BaSO4(s) + 2 NH4C2H3O2(aq). 2 moles C4H10, What does the balanced equation given below mean? 2.ammonium carbonate and calcium chloride. Which of the following contains potential energy? (NH4)2SO4(aq) + Ba(C2H3O2)2(aq) BaSO4(s) + 2 NH4C2H3O2(aq). A) A mole of a diatomic element contains 2 NA moles of atoms of the element. A) The molar mass of a metal is its atomic weight expressed in grams. Because the product is Ba3(PO4)2, which contains three Ba2+ ions and two PO43 ions per formula unit, we can balance the equation by inspection: \[\ce{3Ba(NO_3)_2(aq) + 2Na_3PO_4(aq) \rightarrow Ba_3(PO_4)_2(s) + 6NaNO_3(aq)} \nonumber \]. Since there is an equal number of each element in the reactants and products of H8N2O4S + Ba(C2H3O2)2 = BaO4S + 2NH4C2H3O2, the equation is balanced. Balance the equation (NH4)2SO4 + Ba(C2H3O2)2 = BaSO4 + NH4C2H3O2 using the algebraic method. Which of the following will affect all reaction rates? What does Ammonium phosphate + Barium acetate yield? Based on the reaction shown, which statement is true? For the following aqueous reactions, complete and balance the molecular equation and write a net ionic equation: (a) Manganese(II) sulfide + hydrobromic acid, (b) Potassium carbonate + strontium nitrate, (c) Potassium nitrite + hydrochloric acid, (g) Copper(II) nitrate + hydrosulfuric acid, (i) Potassium chloride + ammonium phosphate. A: Given: The metal A in form of ribbon burnt and forms white powder B which is basic in nature. B) a large enough number of collisions must occur. Barium Peroxide BaSO4 Barium Sulfate BBr3 Boron Tribromide BCl3 Boron Trichloride BeCl2 Beryllium Chloride BeI2 . Determining the Products for Precipitation Reactions: Determining the Products for Precipitation Reactions, YouTube(opens in new window) [youtu.be]. 2003-2023 Chegg Inc. All rights reserved. Given: reactants. Copper(II) sulfate + barium chloride Observations blucian white Molecular equation 2cuso Bach CuCl(s) +BaSO4 (ag). actual yield is 350.g? The following reaction can be classified as what type(s) of reaction(s)? Balance the equations using symbols (g), (aq . Answer: (NH4)2SO4(aq) + Ba(C2H3O2)2(aq) BaSO4(. Label each compound (reactant or product) in the equation with a variable to represent the unknown coefficients. Which of the following can affect the activation energy of a reaction? Water must be present for this reaction to occur. aqueous strontium sulfide and aqueous potassium sulfate Count the number of atoms of each element on each side of the equation and verify that all elements and electrons (if there are charges/ions) are balanced. How to Balance Ba(NO3)2 + MgSO4 = BaSO4 + Mg(NO3)2 | Barium - YouTube Examples: Fe, Au, Co, Br, C, O, N, F. Ionic charges are not yet supported and will be ignored. Asked for: reaction and net ionic equation 2 C8H18 + 25 O2 --> 16 CO2 + 18 H2O, The following equation represents the formation of nitrogen dioxide, a major component of smog, The combination of ions least likely to produce a precipitate is. In contrast, equations that show only the hydrated species focus our attention on the chemistry that is taking place and allow us to see similarities between reactions that might not otherwise be apparent. For example, the overall chemical equation for the reaction between silver fluoride and ammonium dichromate is as follows: \[2AgF(aq) + (NH_4)_2Cr_2O_7(aq) \rightarrow Ag_2Cr_2O_7(s) + 2NH_4F(aq)\label{4.2.4} \]. You'll get a detailed solution from a subject matter expert that helps you learn core concepts. Number and types of bonds in each molecule: (c) one divided by the longest wavelength in the Balmer series. One point is earned for the correct product. E) the speed of a reaction is not influenced by its spontaneity. Home Reactions Blog. 2) In the reaction energy diagrams shown, reaction A is ________, and it occurs ________ reaction B. this is our precipitate sulfide would not be insoluble if it contains a an alkali metal such as . 2 Cr(s) + 3 Cl2(g) 2 CrCl3(s), The balanced equation for the reaction occurring when iron(III) oxide, a solid, is reduced with pure strengths and weaknesses of interpersonal communication; importance of set design in theatre; biltmore forest country club membership cost. Nothing could be further from the truth: an infinite number of chemical reactions is possible, and neither you nor anyone else could possibly memorize them all. Identify the ions present in solution and write the products of each possible exchange reaction. C) gaining electrons. _____________________ Which statement based on the mole concept is not correct? 8/31/2015. sodium carbonate and iron ii chloride ionic equation P4(s) + 10 Cl2(g) 4 PCl5(s) --> H = -435.2 kcal.