Question

In the production of solid silver bromide, 100.0 mL of 0.150M AgNO₃ is added to 20.0 mL of 1.00 M NaBr.

A. Write a balanced equation for the reaction.
B. Identify the limiting reactant.

Answer 1

The balanced chemical equation for the production of solid silver bromide is AgNO₃(aq) + NaBr(aq) → AgBr(s) + NaNO₃(aq). By calculating the moles of each reactant, we determine that AgNO₃ is the limiting reactant as there are fewer moles present compared to NaBr for the reaction.

Step-by-step explanation:

Chemistry Concepts: Stoichiometry and Limiting Reactants:

The balanced equation for the reaction between AgNO₃ and NaBr to produce solid silver bromide (AgBr) and sodium nitrate (NaNO₃) is:

AgNO₃(aq) + NaBr(aq) → AgBr(s) + NaNO₃(aq)

To identify the limiting reactant, we need to calculate the number of moles for both reactants. We use the concentration and volume for the silver nitrate solution (0.150M × 0.100L = 0.015 moles AgNO₃) and the concentration and volume for the sodium bromide solution (1.00M × 0.020L = 0.020 moles NaBr). Since we have more moles of NaBr than AgNO₃, and the reaction is 1:1, AgNO₃ is the limiting reactant.