Question

Mani dilutes concentrated solution of sodium hydroxide NaOH by adding it to water. On dilution, whathappens to the concentration of hydroxide ions?

A) Remain same.

B) Increases

C) First increases then decreases

D) Decreases

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Answer 1

Answer:

Decreases

Explanation:

Because OH-ions give the solution it's basicity.By increasing the dilution of the solution the concentration of dissociated OH-anions decreases and thus the basicity of this solution decrease