(Solution) - What is the total vapor pressure at 20 C of a -(2025 Original AI-Free Solution)

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Academic Level: Undergrad. (yrs 3-4)

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What is the total vapor pressure at 20°C of a liquid solution containing 0.30 mole fraction benzene, C6H6, and 0.70 mole fraction toluene, C6H5CH3? Assume that Raoult's law holds for each component of the solution. The vapor pressure of pure benzene at 20°C is 75 mmHg; that of toluene at 20°C is 22 mmHg.