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Salt of Weak Acid and Strong Base

A solution of...

Question

A solution of sodium carbonate in water has a $p^{H}$ value more than 7. This is due to the hydrolysis of:

N a^{+}

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C O_{3}^{- 2}

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Both

N a^{+}

C O_{3}^{- 2}

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C O_{2}

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Solution

The correct option is D $C O_{3}^{- 2}$
Hydrolysis of Salt of weak acid and strong base
$C O_{3}^{2 -} + H_{2} O \to H_{2} C O_{3} + O H^{-}$
$∴$ Basic solution $p H > 7$

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