A solution of weak acid $HA$ containing $0.01$ moles of acid per litre of solutions has $pH = 4$. The percentage degree of ionisation of the acid and the ionisation constant of acid are respectively.
A solution of weak acid $HA$ containing $0.01$ moles of acid per litre of solutions has $pH = 4$. The percentage degree of ionisation of the acid and the ionisation constant of acid are respectively.
- A
$1\% ,\,{10^{ - 6}}$
- B
$0.01\% ,\,{10^{ - 4}}$
- C
$1\% ,\,{10^{ - 4}}$
- D
$0.01\% ,\,{10^{ - 6}}$
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- [NEET 2015]
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