P-Block Elements Ques 247

Question: Dissociation of $ H_3PO_4 $ occurs in following stages

[CPMT 1976]

Options:

A) 1

B) 2

C) 3

D) 4

Show Answer

Answer:

Correct Answer: C

Solution:

$ H_3PO_4{{H}^{+}}+H_2PO_4^{-} $ ⇌ $ {{H}^{+}}+H_2PO_4^{-} $ $ H_2PO_4^{-} $ ⇌ $ {{H}^{+}}+HPO_4^{2-} $ $ HPO_4^{2-} $ ⇌ $ {{H}^{+}}+PO_4^{3-} $



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