Find out PH of solution having 2- 10 -3 moles of OH - ion-s in 2 litre solution-

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Standard X

Chemistry

Acids and Bases in Water

Find out PH o...

Question

Find out PH of solution having $2 \times 10^{- 3}$ moles of ${O H}^{-}$ ion's in 2 litre solution:

pH=3

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pH=3+log2

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pH=3-log2

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pH=11

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Solution

The correct option is A pH=3
$p H + p O H = 14$
$p O H = - l o g [O H^{-}]$
$p H = - l o g [H^{+}] = 3$
$∴ p H = 3$
$∴$ (A) option is correct.

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Similar questions

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Find out PH of solution having 2×10−3 moles of OH− ion's in 2 litre solution:

The correct option is A pH=3pH+pOH=14pOH=−log[OH−]pH=−log[H+]=3∴pH=3∴(A) option is correct.

Find out PH of solution having $2 \times 10^{- 3}$ moles of ${O H}^{-}$ ion's in 2 litre solution:

The correct option is A pH=3
$p H + p O H = 14$
$p O H = - l o g [O H^{-}]$
$p H = - l o g [H^{+}] = 3$
$∴ p H = 3$
$∴$ (A) option is correct.