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Define molal depression constant. How is it related to enthalpy of fusion ? |
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Answer» Solution :The depression in freezing point when ONE mole of the solute is dissolved in 1000 G of the solvent is called molal depression CONSTANT. It is expressed as `K_f` and is related to enthalpy of fusion, `Delta H` as: `K_f =(RT_(b)^(@2 )M )/(Delta F_(FUS ")xx 1000)` |
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