Reactions of acids

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Question 3
Medium

To determine the precise concentration of sulfuric acid (H2SO4\text{H}_2\text{SO}_4H2​SO4​) in a sample of diluted battery acid, a technician performs a titration.

A 25.00 cm325.00\text{ cm}^325.00 cm3 aliquot of the sulfuric acid solution requires 32.50 cm332.50\text{ cm}^332.50 cm3 of 0.0800 mol/dm30.0800\text{ mol/dm}^30.0800 mol/dm3 potassium hydroxide (KOH\text{KOH}KOH) solution for complete neutralisation.

The equation for the neutralisation reaction is:

H2SO4(aq)+2KOH(aq)→K2SO4(aq)+2H2O(l)\text{H}_2\text{SO}_4(\text{aq}) + 2\text{KOH}(\text{aq}) \rightarrow \text{K}_2\text{SO}_4(\text{aq}) + 2\text{H}_2\text{O}(\text{l})H2​SO4​(aq)+2KOH(aq)→K2​SO4​(aq)+2H2​O(l)

Calculate the concentration of the sulfuric acid in mol/dm3\text{mol/dm}^3mol/dm3.

[3]

Reactions of acids Questions

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