A Solution of Methanol and Water Has a Vapour Pressure $\chi \text { methanol }$

question 147

Multiple Choice

A solution of methanol and water has a vapour pressure of 213 Torr.What would you predict as the mole fractions of each component,assuming ideal behaviour? The vapour pressures of methanol and water are 256 Torr and 55.3 Torr,respectively.

• A) \(\chi \text { methanol }\) = 0.214,\(\chi \text { water }\) = 0.786
• B) \(\chi \text { methanol }\) = 0.786,\(\chi \text { water }\) = 0.214
• C) \(\chi \text { methanol }\) = 0.885,\(\chi \text { water }\) = 0.115
• D) \(\chi _ { \text {methanol } } = 0.900 , \chi \text { water } = 0.100\)
• E) \(\chi \text { methanol }\) = 0.115,\(\chi \text { water }\) = 0.885

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