$0.2$ molar solution of formic acid is ionized $3.2\%$. Its ionization constant is
$0.2$ molar solution of formic acid is ionized $3.2\%$. Its ionization constant is
- A
$1 \times {10^{ - 12}}$
- B
$2.1 \times {10^{ - 4}}$
- C
$1.25 \times {10^{ - 6}}$
- D
$1 \times {10^{ - 14}}$
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