MCQ
What will be the conjugate bases for the following Bronsted acids ? $\text{HF}, \text{H}_2\text{SO}_4 $ and $\text{HCO}^-_3$
  • A
    $\text{F}^-,\text{SO}_4^{2-}$ and $\text{CO}_3^{2-}$
  • B
    $\text{F}^-,\text{SO}^{2-}_4$ and $\text{H}_2\text{CO}_3$
  • C
    $\text{F}^-,\text{HSO}^-_4$ and $\text{H}_2\text{CO}_3$
  • $\text{F}^-,\text{HSO}^-_4$ and $\text{CO}^{2-}_3$

Answer

Correct option: D.
$\text{F}^-,\text{HSO}^-_4$ and $\text{CO}^{2-}_3$
The conjugate bases should have one proton less in each case and therefore, the corresponding conjugate bases are $\text{F}^-,\text{HSO}^-_4$ and $\text{CO}^{2-}_3$ respectively.

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