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pH of a Solution

The PH of ...

Question

The $P^{H}$ of $H C l$ is $3$ . Then the $P^{H}$ of $N a O H$ solution having same molar concentration is:

A

3

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B

6

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C

9

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D

11

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Solution

The correct option is B 11
$G i v e n P^{H} o f H C l = 3 [H^{+ 1}] = 10^{- 3} [H^{+ 1}] = \frac{K w}{[{O H}^{- 1}]} {[O H}^{- 1}] = \frac{10^{- 14}}{10^{- 3}} = 10^{- 11} T h e r e f o r e P^{H} o f N a O H i s 11$

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