Failed to connect to MySQL: Access denied for user 'examnext_online'@'localhost' (using password: YES) Aqueous solution of NaOH, HCl, HCN and KCN of identical concentration are provided. By which of the following pair of solutions a buffer solution can be prepared - Sarthaks eConnect

Aqueous solution of NaOH, HCl, HCN and KCN of identical concentration are provided. By which of the following pair of solutions a buffer solution can be prepared

Aqueous solution of NaOH, HCl, HCN and KCN of identical concentration are provided. By which of the following pair of solutions a buffer solution can be prepared

A.

HCI and HCN

B.

HCI and NaOH

C.

KCN and NaOH

D.

HCI and KCN

Solution

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Best answer

A maximum of HCl and KCN will act as buffer if HCl is in limiting agent.