1.

The pH of water at 25^(@)C is nearly

Answer»

2
7
10
12

Solution :`[H^(+)] = [OH^(-)]`
`K_(w) = [H^(+)][OH^(-)] = 10^(-14)`
`:. [H^(+)] = 10^(-7), PH = -log[H^(+)] = 7`.


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