Problem: You measure two different pressures of the sealed vial containing air and ethanol at two different temperatures; 890.27 mmHg at 27°C and 908.53 mmHg at 40°C. From earlier measurements you found that the pressure of air at 27°C is 760.05 mmHg. What is the vapor pressure?At 27°C: 130.22 mmHgAt 40°C: _____ mmHg

FREE Expert Solution

(1) Calculate the pressure at 40°C using chemistry gas law. Recall that pressure and temperature are directly proportional

P1T1=P2T2760.05 mmHg27+273.15 K=P240+273.15 K

P2 = 792.96 mmHg

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Problem Details

You measure two different pressures of the sealed vial containing air and ethanol at two different temperatures; 890.27 mmHg at 27°C and 908.53 mmHg at 40°C. From earlier measurements you found that the pressure of air at 27°C is 760.05 mmHg. What is the vapor pressure?

At 27°C: 130.22 mmHg

At 40°C: _____ mmHg

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