1.

Which of thefollowing will produce a buffer solution when mixed in equal volumes ?

Answer»

0.1 MOL `dm^(-3) NH_(4)OH` and 0.1 mol `dm^(-3)` HCl
0.05 mol `dm^(-3) NH_(4)OH` and 0.1 mol `dm^(-3)` HCl
0.1 mol `dm^(-3) NH_(4)OH` and 0.05 mol `dm^(-3)` HCl
0.1 mol `dm^(-3) CH_(3)CO ON a` and 0.1 mol `dm^(-3)` NaOH

Solution :In (C), all HCl will be neutralized and `NH_(4)Cl` will be formed. Also some `NH_(4)OH` will be left unneutralized. Thus, the final solution will contain `NH_(4)OH and NH_(4)Cl` and hence will form a BUFFER.


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