MCQ
Oxalic acid may be distinguished from tartaric acid by
- ASodium bicarbonate solution
- ✓Ammonical silver nitrate solution
- CLitmus paper
- DPhenolphthalein
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$I.\,H_2S_2O_6\,\,\,\,\,\,\,\,II.\,H_2SO_3\,\,\,\,\,\,\,\,III.\,H_2SO_5$
$\mathrm{x}=$ . . . . . . . . . (Nearest integer)
Given : $\left(\mathrm{K}_{\mathrm{r}}\right)_{\text {water }}=1.86 \mathrm{~K} \mathrm{~kg} \mathrm{~mol}^{-1}$.
density of acetic acid is $1.2 \mathrm{~g} \mathrm{~mol}^{-1}$
molar mass of water $=18 \mathrm{~g} \mathrm{~mol}^{-1}$.
molar mass of acetic acid $=60 \mathrm{~g} \mathrm{~mol}^{-1}$.
density of water $=1 \mathrm{~g} \mathrm{~cm}^{-3}$
Acetic acid dissociates as
$\mathrm{CH}_3 \mathrm{COOH} \rightleftharpoons \mathrm{CH}_3 \mathrm{COO}^{\oplus}+\mathrm{H}^{\oplus}$