Solved: The precipitation reaction between 25.0 mL of a solution containing a cation

Chapter 4, Problem 4.38

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The precipitation reaction between 25.0 mL of a solution containing a cation (purple) and 35.0 mL of a solution containing an anion (green) is depicted below (with ions shown as spheres and solvent molecules omitted for clarity). (a) Given the following choices of reactants, write balanced total ionic and net ionic equations that best represent the reaction: (1) KNO3(aq) _ CuCl2(aq) (2) NaClO4(aq) _ CaCl2(aq) (3) Li2SO4(aq) _AgNO3(aq) (4) NH4Br(aq) _ Pb(CH3COO)2(aq) (b) If each sphere represents 2.5_10_3 mol of ion, find the total number of ions present. (c) What is the mass of solid formed?

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