Question

Which of the following is a buffer solution

(a) CH3COONa + NaCl in water (b) CH3COOH + HCl in water

(c) CH3COOH + CH3COONa in water (d) HCl + NH4Cl in water​

Answer 1

CH3COOH + CH3COONa in water is a buffer solution.

• A buffer solution contain a acid or base with its respective salt.
• In CH3COONa + NaCl in water NaCl and CH3COONa both are salts.
• In CH3COOH + HCl in water both are acid one is strong another one is weak.
• In CH3COOH + CH3COONa in water CH3COOH is a weak acid and CH3COONa is a salt of CH3COOH.
• In HCl + NH4Cl in water HCl is strong acid and NH4Cl is a base.