The correct formula for the $pK_h$ value of a salt formed from a weak acid and a weak base is .....
- A$pK_h = pK_w - pK_a - pK_b$
- B$pK_h = 14 + pK_a - pK_b$
- C$pK_h = pK_w - pK_a + pK_b$
- D$pK_h = 14 - pK_a + pK_b$
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