Ionic EquilibriumHard

Question

Which of following can act as buffer ?

Options

A.NaCl + NaOH

B.Borax + Boric acid

C.NaH₂PO₄ + Na₂HPO₄

D.NH₄Cl + NH₄OH

Solution

(B), (C) and (D) are the mixtures of conjugate acid-base pairs.

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