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Question

Chemistry Question on Equilibrium

When OH−OH^{-} ion concentration of a solution increases, its

A

pH increases

B

pH decreases

C

\ceH+\ce{H^{+}} ion concentration increases

D

pH remains constant.

Answer

pH increases

Explanation

Solution

pOH=−log[OH−] {pOH = - log[OH^{-}]}
When [OH−] {[OH^{-}]} increases, pOH value decreases
pH = 14 - pOH
As pOH decreases, pH increases.