At a certain temperature the vapor pressure of pure acetic acid (HCH,CO,) is measured to be 130. mmHg. Suppose a solution is prepared by mixing 91.2 g of acetic acid and 80.7 g of methanol (CH;OH). Calculate the partial pressure of acetic acid vapor above this solution. Round your answer to 3 significant digits. Note for advanced students: you may assume the solution is ideal.
At a certain temperature the vapor pressure of pure acetic acid (HCH,CO,) is measured to be 130. mmHg. Suppose a solution is prepared by mixing 91.2 g of acetic acid and 80.7 g of methanol (CH;OH). Calculate the partial pressure of acetic acid vapor above this solution. Round your answer to 3 significant digits. Note for advanced students: you may assume the solution is ideal.
Chemistry
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ISBN:9781305957404
Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste
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Chapter1: Chemical Foundations
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Transcribed Image Text:At a certain temperature the vapor pressure of pure acetic acid (HCH,CO,) is measured to be 130. mmHg. Suppose a solution is prepared by mixing 91.2 g of
acetic acid and 80.7
of methanol (CH,OH).
g
Calculate the partial pressure of acetic acid vapor above this solution. Round your answer to 3 significant digits.
Note for advanced students: you may assume the solution is ideal.
Expert Solution
Step 1
Given,
The vapour pressure of pure acetic acid (HCH3CO2) = 130 mmHg
Mass of acetic acid (HCH3CO2) = 91.2 g
Mass of methanol (CH3OH) = 80.7 g
The partial pressure of acetic Acid vapours above the solution = ?
Note:
Molar mass of acetic acid (HCH3CO2) = (2×12 + 4×1 +2×16) g/mol = 60.0 g/mol
Molar mass of methanol (CH3OH) = (12 + 4×1 + 16) g/mol = 32 g/mol
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