question_answer

Which one of the following pairs of solution is not an acidic buffer?                      [NEET 2015 (Re)]

A)   \[HCl{{O}_{4}}\] and \[NaCl{{O}_{4}}\]

B)  \[C{{H}_{3}}COOH\] and \[C{{H}_{3}}COONa\]

C)  \[{{H}_{2}}C{{O}_{3}}\] and \[N{{a}_{2}}C{{O}_{3}}\]

D)  \[{{H}_{3}}P{{O}_{4}}\] and \[N{{a}_{2}}P{{O}_{4}}\]

Correct Answer: A

Solution :

Strong acid with its salt cannot form buffer solution. Hence,  and  is not an acidic buffer.