Answer to Question #323257 in General Chemistry for Courtney

Question

Aqueous hydrobromic acid (HBr) will react with solid sodium hydroxide (NaH) to produce aqueous sodium bromide (NaBr) and liquid water (H, 0).

Suppose 75.2 g of hydrobromic acid is mixed with 14. g of sodium hydroxide. Calculate the maximum mass of sodium bromide that could be produced by the

chemical reaction. Be sure your answer has the correct number of significant digits.

Answer 1

HBr + NaOH = NaBr + H₂O

n(HBr) = m(HBr) / Mr(HBr) = 75.2 g / 80.91 g/mol = 0.93 mol

n(NaOH) = m(NaOH) / Mr(NaOH) = 14.0 g / 40.0 g/mol = 0.35 mol

NaOH is limiting reactant

n(NaBr) = n(NaOH) = 0.35 mol

m(NaBr) = n(NaBr) × Mr(NaBr) = 0.35 mol × 102.894 g/mol = 36.0 g