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Try it: The stoichiometry of a precipitation reaction

Molarity is a useful concept for stoichiometric calculations involving reactions in solution, such precipitation and neutralization reactions. For example, consider the precipitation reaction that occurs between

{Pb(NO}_{3})_{2} (a q)

and

KI (a q)

. When these two solutions are combined, bright yellow

{PbI}_{2} (s)

precipitates out of solution. The balanced equation for this reaction is:

${Pb(NO}_{3})_{2} (a q) + 2 KI (a q) \to {PbI}_{2} (s) + 2 {KNO}_{3} (a q)$ ‍

If we have $0.1 L$ ‍ of $0.10 {M Pb(NO}_{3})_{2}$ ‍, what volume of $0.10 M KI (a q)$ ‍ should we add to react with all the ${Pb(NO}_{3})_{2} (a q)$ ‍?

Practice

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