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On dissolving 0.5 g of non-volatile, non...

On dissolving 0.5 g of non-volatile, non-ionic solute to 39 g of benzene, its vapour pressure decreases from 650 mm of Hg to 640 mm of Hg. The depression of freezing point of benzene (in K) upon addition of the solute is __________.
(Given data: Molar mass & molar freezing point depression is 78 g `mol^(-1) & 5.12 K kg mol^(-1)`]

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AI Generated Solution

To solve the problem of finding the depression of the freezing point of benzene upon dissolving a non-volatile, non-ionic solute, we will follow these steps: ### Step 1: Understand the Given Data - Mass of non-volatile solute (m_solute) = 0.5 g - Mass of benzene (m_benzene) = 39 g - Initial vapor pressure of benzene (P₀) = 650 mm Hg - Vapor pressure of solution (P_s) = 640 mm Hg - Molar mass of benzene (M_benzene) = 78 g/mol ...
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