MCQ
Which is not a buffer solution
- A$N{H_4}Cl + N{H_4}OH$
- B$C{H_3}COOH + C{H_3}COONa$
- ✓$C{H_3}COON{H_4}$
- DBorax + Boric acid
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$(A)$ $H _2 O _2$ in presence of $NaOH$
$(B)$ $Na _2 O _2$ in water
$(C)$ $H _2 O _2$ in presence of $H _2 SO _4$
$(D)$ $Na _2 O _2$ in presence of $H _2 SO _4$
$\left[\right.$ Use $: \mathrm{H}^{+}(\mathrm{aq})+\mathrm{OH}^{-}(\mathrm{aq}) \rightarrow \mathrm{H}_{2} \mathrm{O}: \Delta_{\mathrm{\gamma}} \mathrm{H}=-57.1\, \mathrm{k} \mathrm{J} \,\mathrm{mol}^{-1}$
Specific heat of $\mathrm{H}_{2} \mathrm{O}=4.18 \mathrm{Jk}^{-} \mathrm{g}^{-}$
density of $\mathrm{H}_{2} \mathrm{O}=1.0\, \mathrm{~g} \mathrm{~cm}^{-3}$
Assume no change in volume of solution on mixing.]