A 25 cm3 sample of hydrochloric acid with an unknown concentration was titrated against a solution of sodium hydroxide with a concentration of 0.1 mol/dm3. It took exactly 23.5 cm3 of sodium hydroxide

A 25 cm3 sample of hydrochloric acid with an unknown concentration was titrated against a solution of sodium hydroxide with a concentration of 0.1 mol/dm3. It took exactly 23.5 cm3 of sodium hydroxide to neutralise the acid.

i. Write the balanced equation for the reaction.
ii. How many moles of HCl must be present in the 25 cm3 sample? Explain how you
reached this value.
iii. Calculate the concentration of the HCl solution.

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A 25 cm3 sample of hydrochloric acid with an unknown concentration was titrated against a solution of sodium hydroxide with a concentration of 0.1 mol/dm3. It took exactly 23.5 …

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