Q.

Which solution is not a buffer solution?

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a

CH3COOH (2 mole)+ KOH (1 mole) in 5 L

b

NaCN (2 mole) + HCl (1 mole) in 5 L

c

HN3 (2 mole) + HCl (1 mole) in 5 L

d

NaCN (1 mole)+ HCl (1 mole) in 5 L

answer is B.

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Detailed Solution

NaCN (1 mole)+ HCl (1 mole) in 5 L is not is not a buffer solution.

This is actually a solution of weak acid HCN with salt NaCl (having spectator ions only).

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