1.

Pure water freezes at 273 K and 1 bar. The addition of 34.5 g of ethanol to 500 g of water changes the freezing point of the solution. Use the freezing point depression contant of water as 2 K kg mol^(-1). The figures shown below represent polts of vapour (V.P.) versus temperature (T). [Molecular weight of ethanol is 46g mol^(-1)] Among the following, the option representing change in the freezing point is

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