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At 25°C a solution consists of 0.450 mole of pentane, C5H12, and 0.250 mole of cyclopentane, C5H10. What is the lowering of the vapor pressure of pentane in this solution? The vapor pressure of the pure liquids at 25°C are 451 torr for pentane and 321 torr for cyclopentane. Assume that the solution is an ideal solution.
115 torr
138 torr
161 torr
187 torr
206 torr
Synthetic chemists often take IR and NMR spectra of crude reaction products, before further purification, looking for evidence that the reaction had afforded the expected product.
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