At 40°C,heptane Has a Vapor Pressure of About 92

question 54

Multiple Choice

At 40°C,heptane has a vapor pressure of about 92.2 torr and octane has a vapor pressure of about 31.2 torr.Assuming ideal behavior,what is the vapor pressure of a solution that contains twice as many moles of heptane as octane?

• A)61.5 torr
• B)51.5 torr
• C)71.9 torr
• D)82.3 torr
• E)none of these

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