Equimolal solutions of non-electrolytes in th | vedclass

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Question

(C) Colligative properties such as elevation in boiling point $(\Delta T_b)$ and depression in freezing point $(\Delta T_f)$ depend on the molality $(

Vedclass · Accepted Answer

same freezing and same boiling point

Vedclass · Answer

(C) Colligative properties such as elevation in boiling point $(\Delta T_b)$ and depression in freezing point $(\Delta T_f)$ depend on the molality $(m)$ of the solute particles in the solution.For non-electrolytes,the van't Hoff factor $(i)$ is $1$.The formulas are $\Delta T_b = K_b 	imes m$ and $\Delta T_f = K_f 	imes m$.Since the solutions are equimolal (same $m$) and the solvent is the same (same $K_b$ and $K_f$),both $\Delta T_b$ and $\Delta T_f$ will be the same.Therefore,the boiling point $(T_b = T_b^0 + \Delta T_b)$ and freezing point $(T_f = T_f^0 - \Delta T_f)$ will be the same for both solutions.

Equimolal solutions of non-electrolytes in the same solvent have:

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