in-a-diprotic-buffer-system-with-h2a-ha-and-a2-which-form-should-be-used-with-pk

Question

In a diprotic buffer system with $$H_{2}A$$, $$HA^{-}$$, and $$A^{2-}$$, which form should be used with pK_{a2} in the Henderson-Hasselbalch equation?

Accepted Answer

$$HA^{-}$$ and $$A^{2-}$$

Answer

None of the above

Answer

$$H_{2}A $$and $$A^{2-}$$

Answer

$$H_{2}A $$and $$HA^{-}$$

In a diprotic buffer system with H2A, HA-, and A2-, which form should be used with pKa2 in the Henderson-Hasselbalch equation?

In a diprotic buffer system with H₂A, HA^-, and A^2-, which form should be used with pK_a2 in the Henderson-Hasselbalch equation?