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Will the pH of water be same at 4^(@)C a...

Will the pH of water be same at `4^(@)C` and `25^(@)C` ? Explain.

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No, pH of water is not same at `4^(@)C and 25^(@)C`. This is because with increase in temperature, dissociation of `H_(2)O` molecules increases. Hence, `[H^(+)]` will increase, i.e., pH decreases. Thus, pH at `4^(@)C` will be more than at `25^(@)`C.
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