Question

Aqueous sulfuric acid will react with solid sodium hydroxide to produce aqueous sodium sulfate and liquid water . Suppose 36. g of sulfuric acid is mixed with 43.2 g of sodium hydroxide. Calculate the minimum mass of sulfuric acid that could be left over by the chemical reaction. Round your answer to 2 significant digits.

Answer 1

The balanced chemical equation for the neutralisation reaction is shown below.

Mass of sulfuric acid

Molar mass of sulfuric acid

Number of moles of sulfuric acid

Mass of sodium hydroxide

Molr mass of sodium hydroxide

Number of moles of sodium hydroxide

0.367 moles of sulfuric acid will react with

But 1.08 moles of NaOH are present. Hence, NaOH is excess reagent and sulfuric acid is limiting reagent.

During the reaction, sulfuric acid will be completely neutralsied.

Hence, the minimum mass of sulfuric acid that can be left over by the chemical reaction is 0.0 grams.