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Which can act as buffer?(a) NH4Cl + NH4OH(b) CH3COOH + CH3COONa(c) 40 mL of 0.1 M NaCN + 20 mL of 0.1 M HCl(d) All of the above |
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Answer» Correct option: (d) Explanation: NaCN (4 millimole) and HCl (2 millimole) on reaction give 2 millimole of HCN and 2 millimole of NaCN are left which acts as buffer. |
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