A Bottle Is Half-Filled with a Mixture of 25% Liquid

question 111

Essay

A bottle is half-filled with a mixture of 25% liquid heptane and 75% liquid octane (mole fractions) at 25C. What is the mole ratio of heptane to octane in the space above the liquid compared to in the liquid? The vapor pressures are 31 torr for pure heptane and 11 torr for pure octane.

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Definitions:

Outcomes-to-Inputs Ratio

A performance measure used to evaluate the efficiency of an investment or to compare the efficiency of a number of different investments.

Expectancy

A person’s belief that working hard will result in high task performance.

Desired Level

The specific goal or standard of achievement that individuals or groups aim to reach.

Task Performance

The execution and completion of job-related activities, often measured against expected outcomes or standards.