$20\%$ of acetic acid is dissociated when its $5\ \mathrm{g}$ is added to $500\ \mathrm{mL}$ of water. The depression in freezing point of such solution is _____ $ imes10^{-3}\ ^{\circ}\mathrm{C}$. Atomic mass of $\mathrm{C,H}$ and $\mathrm{O}$ are $12,\ 1$ and $16$ a.m.u. respectively. [Given : Molal depression constant and density of water are $1.86\ \ \mathrm{K\ kg\ \ mol^{-1}}$ and $1\ \mathrm{g\ cm^{-3}}$ respectively.

Question

$20\%$ of acetic acid is dissociated when its $5\ \mathrm{g}$ is added to $500\ \mathrm{mL}$ of water. The depression in freezing point of such solution is _____ $	imes10^{-3}\ ^{\circ}\mathrm{C}$. Atomic mass of $\mathrm{C,H}$ and $\mathrm{O}$ are $12,\ 1$ and $16$ a.m.u. respectively. [Given : Molal depression constant and density of water are $1.86\ \ \mathrm{K\ kg\ \ mol^{-1}}$ and $1\ \mathrm{g\ cm^{-3}}$ respectively.

Dr. Abubacker · Accepted Answer

The correct numerical answer is 372.

Explanation

Reviewed by Dr. Abubacker

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