The vapour pressure of pure benzene at a certain temperature is 640 mm – InterviewSolution

1.	The vapour pressure of pure benzene at a certain temperature is 640 mm Hg. A non - valatile solid weighing 2.175 g is added to 39.0 g of benzene. The Vapour pressure of the solution is 600 mm Hg. What is the molecular mass of the solid substance?
Answer» The vapour pressure of pure benzene at a certain temperature is $640 m m H g$ . A non - valatile solid weighing $2.175 g$ is added to $39.0 g$ of benzene. The Vapour pressure of the solution is $600 m m$ Hg. What is the molecular mass of the solid substance?

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