MCQ
In which of the following combination, is buffer action expected?

$(A)\,\,NH_4OH + NH_4Cl$       $(B)\,\,HCl + NaCl$

$(C)\,\,NH_4OH + HCl$ in $2 : 1\,mole$ ratio

Select the correct answer using the code given below

  • A
    $A$ and $B$
  • $A$ and $C$
  • C
    $A,B$ and $C$
  • D
    None of these

Answer

Correct option: B.
$A$ and $C$
b
Combination of weak base and its salt with strong acid act as basis bufter solution

           $N{H_4}OH + HCl \to N{H_4}Cl + {H_2}O$

inintial    $2$ mol        $1$ mol               $0$                $0$

eqn    $2-1=1$    $1-1=0$      $1$                $1$

Final solution have $\mathrm{NH}_{4} \mathrm{OH}+\mathrm{NH}_{4} \mathrm{Cl}$ then its buffer solution

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