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1. What is the concentration of a solution of sodium hydroxide, 25.0 cm³, of which requires 20.0 cm³ of hydrochloric acid of concentration 0.100 mol dm³ for neutralisation? /Ans: 0.080 M/

2.

Sulfuric acid is titrated against 25.00cm³ of 0.2000 mol dm³ sodium hydroxide solution. It is found that 23.20cm³ of sulfuric acid is required for neutralisation. Calculate the concentration of the sulfuric acid. /Ans: 0.1078 M/

A solution of sodium carbonate of concentration 0.100 mol dm³ is used to standardise a solution of hydrochloric acid. 25.0

cm³ of the standard solution of sodium carbonate require 35.0 cm³ of the acid for neutralisation. Calculate the concentration of acid. /Ans: 0.143 M/

4. Calculate the volume, in dm³, of 0.390 mol dm³ potassium hydroxide solution that will neutralize 25.0 cm³ of 0.350 mol dm³ sulfuric acid.