The $\mathrm{K}_{\mathrm{a}}$ values of $\mathrm{A}, \mathrm{B}$ and $\mathrm{C}$ are $1.8 \times 10^{-4}, 5…
The $\mathrm{K}_{\mathrm{a}}$ values of $\mathrm{A}, \mathrm{B}$ and $\mathrm{C}$ are $1.8 \times 10^{-4}, 5 \times 10^{-10}$ and $3 \times 10^{-8}$ respectively. The correct order of their acidic strength is
$\mathrm{B}>\mathrm{A}>\mathrm{C}$
$\mathrm{B}>\mathrm{C}>\mathrm{A}$
$A>B>C$
$A>C>B$
Solution
Larger the $\mathrm{K}_{\mathrm{a}}$ values, higher is the acidic strength.