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Organic Compounds

The pH of a ...

Question

The pH of a $0.1 M$ aqueous solution of a weak acid ( $H A$ ) is $3$ . Its degree of dissociation is

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Solution

The correct option is A $1$ %
$[H^{+}] = C . α = 10^{- 3}$

$0.1 \times α = 10^{- 3}$

$α = 10^{- 2} = 10^{- 2} \times 100 = 1 %$

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