Chemistry - Liquid Solution Question with Solution | TestHub

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