A buffer solution can be prepared from a mixture of

A. Sodium acetate and acetic acid in water

B. Sodium acetate and HCl in water

C. NH3 and NH4Cl in water

D. NH3 and NaOH in water.

The answer as given in the book is ABC

But I'm confused why B is given the answer.

Please explain.

xxx

7 Years agoGrade