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pH the Power of H

The pH of a s...

Question

The pH of a solution having a concentration of $[O H^{-}]$ is $1.0 \times 10^{- 4}$ is:

- 4

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+ 4

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+ 7

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- 10

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+ 10

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Solution

The correct option is E $+ 10$
Since $p H + p O H = 14$
$p O H = - {l o g}_{10} [{O H}^{-}] = 4$
$∴ p H = 10$

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