s-Block ElementsHard

Question

The pairs of compound which cannot exist together in aqueous solution are :

Options

A.NaH₂ PO₄ and Na₂HPO₄

B.Na₂ CO₃ and NaHCO₃

C.NaOH and NaH₂ PO₄

D.NaHCO₃ and NaOH.

Solution

(C) NaOH & NaH₂ PO₄ produces Na₂HPO₄ and Na₃PO₄
(D) NaHCO₃ & NaOH produces Na₂CO₃

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