For a weak acid HA, the percentage of dissociation is nearly 1% at equilibrium. If the concentration of acid is 0.1 mol L$^{-1}$, then the correct option for its K$_a$ at the same temperature is :

Question

$1\times10^{-4}$

$1\times10^{-6}$

$1\times10^{-5}$

$1\times10^{-3}$

Solution

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