Question

Which is a buffer solution.

• A. $\mathrm { CH } _ { 3 } \mathrm { COOH } + \mathrm { CH } _ { 3 } \mathrm { COONa }$
• B. $\mathrm { CH } _ { 3 } \mathrm { COOH } + \mathrm { CH } _ { 3 } \mathrm { COONH } _ { 4 }$
• C. $\mathrm { CH } _ { 3 } \mathrm { COOH } + \mathrm { NH } _ { 4 } \mathrm { Cl }$
• D. $\mathrm { NaOH } + \mathrm { NaCl }$

Answer 1

Answer: (A)

$\mathrm { CH } _ { 3 } \mathrm { COOH } + \mathrm { CH } _ { 3 } \mathrm { COONa }$

Answer 2

Buffer solution is a mixture of weak acid and its conjugate base.