Which Statement Regarding the Fractional Distillation of Two Substances Is

question 13

Multiple Choice

Which statement regarding the fractional distillation of two substances is not correct?

• A)The substance with the lower boiling point has a higher concentration in the vapor than in the liquid.
• B)The boiling point of the mixture is not constant, changing as the distillation progresses.
• C)The substance with the higher vapor pressure has a higher concentration in the vapor than in the liquid.
• D)The mole ratio of the two substances in the vapor is not the same as it is in the liquid.
• E)When the vapor at any stage of the distillation is condensed, the resulting distillate has the same composition as the original mixture of the two substances.

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Definitions:

Caffeine Consumed

The amount of caffeine intake in a given period; not a key term in a statistical or general scientific context, thus NO.

P < 0.05

A statistical significance level indicating that there is less than a 5% probability the observed results occurred by chance, suggesting a significant difference or effect.

Directional

A hypothesis that specifies the direction of the expected relationship between variables.

Nondirectional

Refers to hypotheses or predictions that do not specify a predicted direction of the relationship between variables.