# Volatile solutes

Chemistry Level pending

At $$20$$°C, the vapor pressure of toluene is $$0.0289$$ atm and the vapor pressure of benzene is $$1.34$$ atm. Suppose that $$0.4$$ mol of toluene and $$0.4$$ mol of benzene are mixed to form an ideal solution. What is the mole fraction of benzene in the vapor in equilibrium with this solution?

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