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Questions  >>  AIMS  >>  Class12  >>  Chemistry  >>  Liquid Solutions
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The vapour pressure of pure benzene of a certain temperature is 0.850 bar. A non volatile, non-electrolyte solid weighing 0.5g is added to 39.0 g of benzene (molar mass $78g mol^{−1}$). The vapour pressure of the solution then is 0.845 bar. What is the molar mass of the solid substance?

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