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The freezing point of a solution containing of in of water is . Calculate van’t Hoff factor ‘ ’ for…
The freezing point of a solution containing $5\cdot85\text{ g}$ of $\text{NaCl}$ in $100\text{ g}$ of water is $-3\cdot348^\circ\text{C}$. Calculate van’t Hoff factor ‘$i$’ for this solution. What will be the experimental molecular weight of $\text{NaCl}$?
($K_f$ for water = $1\cdot86\text{ K kg mol}^{-1}$, at. wt. $\text{Na} = 23$, $\text{Cl} = 35\cdot5$)
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From ISC 2018 Chemistry Paper 1, question 9(a).