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For an ideal solution containing a nonvolatile solute,which of the following expressions represents the vapour pressure of the solution?(where the subscripts 1 and 2 stand for solvent and solute, respectively)

$\begin{array}{1 1}p=x_2p_2^*\\p=x_1p_2^*\\p=x_1p_1^*\\p_1^*-p=x_2\end{array}$

Can you answer this question?

Answer : $p=x_1p_1^*$
From Raoult's law,$p=x_1p_1^*$
answered Jul 17, 2014