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pH the Power of H

pH = - log10 ...

Question

$p H = - l o g_{10} [H^{+}]$ . The $p H$ of a solution containing hydrogen ion concentration of 0.001 M solution is______.

A

11

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B

14

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C

3

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D

4

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Solution

The correct option is C 3
$[H^{+}] = 0.001 = \frac{1}{1000} = 10^{- 3}$
$p H = - log (0.001) = - {log}_{10} (10^{- 3}) = - (- 3)$
$p H = 3$

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