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Use the vapour pressures (at 0 °C) of the pure substances below to answer the following...

Use the vapour pressures (at 0 °C) of the pure substances below to answer the following questions.

Substance P* (kPa)
3-pentanone (C5H10O) 1.18
3-methyl-2-butanone (C5H10O) 1.62





1. Determine the partial pressure (in kPa) of 3-methyl-2-butanone (C5H10O) in the vapour phase (at 0 °C) over a solution for which the mole fraction of 3-pentanone (C5H10O) is 0.787. Report your answer to three significant figures in scientific notation.


A solution of 3-pentanone (C5H10O) and 3-methyl-2-butanone (C5H10O) is prepared by adding 5.22 g of 3-pentanone to 7.46 g of 3-methyl-2-butanone. Determine the mole fraction of 3-pentanone in the vapor phase (at 0 °C). Report your answer to three significant figures in scientific notation.

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queen_honey_blossom answered 2 years ago
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