Aqueous solutions of HNO3 KOH, CH3COOH and CH3COONa of identical concentrations are provided. The pair(s) of solutions which form a buffer upon mixing is(are)

Question

Aqueous solutions of HNO3 KOH, CH3COOH and CH3COONa of identical concentrations are provided. The pair(s) of solutions which form a buffer upon mixing is(are) (A)  HNO3 and CH3COOH  (B)  KOH and CH3COONa  (C)  HNO3 and CH3COONa  (D)  CH3COOH and CH3COONa

Tardigrade Admin · Accepted Answer

In HNO3 and CH3COONa combination, if HNO3 is present in limiting amount, it will be neutralised completely, leaving behind some excess of CH3COONa.

Q. Aqueous solutions of $H N O_{3} K O H, C H_{3} COO H$ and $C H_{3} COON a$ of identical concentrations are provided. The pair(s) of solutions which form a buffer upon mixing is(are)

$H N O_{3}$ and $C H_{3} COO H$

$K O H$ and $C H_{3} COON a$

$H N O_{3}$ and $C H_{3} COON a$

$C H_{3} COO H$ and $C H_{3} COON a$

In $H N O_{3}$ and $C H_{3} COON a$ combination, if $H N O_{3}$
is present in limiting amount, it will be neutralised
completely, leaving behind some excess of $C H_{3} COON a .$

Q. Aqueous solutions of HNO3​KOH,CH3​COOH and CH3​COONa of identical concentrations are provided. The pair(s) of solutions which form a buffer upon mixing is(are)

HNO3​ and CH3​COOH

KOH and CH3​COONa

HNO3​ and CH3​COONa

CH3​COOH and CH3​COONa