Given below are two statements : Statement (I) : Molal depression constant K f is given by Δ S f u s M 1 R T f , where symbols have their usual meaning. Statement (II) : K f for benzene is

Question

Given below are two statements :
Statement (I) : Molal depression constant $K_{f}$ is given by $\frac{M _{1} R T _{f}}{Δ S _{f u s}}$ , where symbols have their usual meaning.
Statement (II) : $K_{f}$ for benzene is less than the $K_{f}$ for water.
In the light of the above statements, choose the most appropriate answer from the options given below :

TestHub · Accepted Answer

Statement-I Molar depression constant k f ​ = Δ H fus ​ M 1 ​ RT f 2 ​ ​ ​ k f ​ = [ T f ​ Δ H fus ​ ​ ] M 1 ​ RT f ​ ​ k f ​ = Δ S fus ​ M 1 ​ RT f ​ ​ ​ Hence statement-I is correct but k f ​ for benzene = 5.12 molal ∘ C ​ k f ​ for water = 1.86 molal ∘ C ​ Hence statement- II is incorrect

Chemistry - Liquid Solution Question with Solution | TestHub

Options:

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