Q.

What happens to the concentration of hydroxide ions when a base is diluted?

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a

Increases

b

Remain constant

c

Decreases

d

Depends on the temperature.

answer is A.

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Detailed Solution

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When a base is diluted, water is added to it. Then the concentration of hydroxide ions decreases because concentration is the number of ions per unit volume. After dilution volume increases, hence the concentration of hydroxide ions decreases.

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What happens to the concentration of hydroxide ions when a base is diluted?