-What is the approximate boiling temperature of a mixture that is 0.70 X_A and 0.30 X_B?

Question

-What is the approximate boiling temperature of a mixture that is 0.70 X_A and 0.30 X_B? A)50°C B)75°C C)95°C D)100°C

Quizplus · Accepted Answer

The boiling point of a mixture can be estimated using Raoult's Law, which states that the boiling point of a mixture is dependent on the boiling points of the pure components and their mole fractions in the mixture. Given X_A (ethanol) has a boiling point of approximately 78°C and X_B (water) boils at 100°C, a mixture of 0.70 ethanol and 0.30 water would have a boiling point lower than 100°C but higher than 78°C. Since 75°C is the only option within this range, it is the best estimate.

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