$p{K_a}$ of a weak acid is defined as
$p{K_a}$ of a weak acid is defined as
- A
$log_{10}{K_a}$
- B
$\frac{1}{{lo{g_{10}}{K_a}}}$
- C
$log _{10}\frac{1}{{{K_a}}}$
- D
$-log_{10}\frac{1}{{{K_a}}}$
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- [IIT 2009]
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