Question

Does pH of a solution changes with dilution​

Answer 1

Dilution changes the pH value of an acid or a base toward 7. The pH value of a acidic solution increases with dilution and the pH values of a basic solution decreases with dilution.

Answer 2

Adding water to an acid or base will change its pH. ... When an acidic solution is diluted with water the concentration of H + ions decreases and the pH of the solution increases towards 7. To make the pH change by 1, a tenfold dilution is required (eg adding 9 cm 3 of water to 1 cm 3 acid).

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