Current Attempt in Progress

Liquid methyl ethyl ketone $($MEK$)$ is introduced into a vessel containing air.

The system temperature is increased to $50\mathrm{.}0C,$ and the vessel contents reach equilibrium with some MEK remaining in the liquid

state.

The equilibrium pressure is $1400\mathrm{.}0mmHg.$

Physical Property Tables

Degrees of Freedom

Correct.

Use the Gibbs phase rule to determine how many degrees of freedom exist for the system at equilibrium.

Degrees of freedom

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Hint

Vapor Mole Fraction

Check that you calculated the vapor pressure properly.

Mixtures of MEK vapor and air that contain between $1\mathrm{.}80$ mole$\%$ MEK and $11\mathrm{.}5$ mole$\%$ MEK can ignite and burn explosively if

exposed to a flame or spark.

What is the mole fraction of MEK in the vessel?

Hint

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