The \( \mathrm{pH} \) of a solution is 5 . To this solution acid wa...

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The \( \mathrm{pH} \) of a solution is 5 . To this solution acid was
P added so that its \( \mathrm{pH} \) value becomes 2.0 . The increase

W in \( \mathrm{H}^{+} \)concentration is
(1) 100 times
(2) 5 times
(3) 2.5 times
(4) 1000 times
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