1.

Which can act as buffer?(a) NH4 Cl + HCl(b) CH3 COOH + H2 CO3(c) 40ml of 0.1M NaCN + 20ml of 0.1M HCN(d) NaCl + NaOH

Answer» Right answer is (c) 40ml of 0.1M NaCN + 20ml of 0.1M HCN

Easy explanation: It is a mixture of weak acid and its salt with strong base.


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