Which of the following pairs can be used to make a buffer at pH 7? - EQUILIBRIUM Quiz | GKFix.in

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Question

Which of the following pairs can be used to make a buffer at pH 7?

A. CH3COOH and CH3COONa
B. NH4OH and NH4Cl
C. HCl and NaCl
D. H2PO4– and HPO42–

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