Problem: Acetic acid has a normal boiling point of 118 oC and a ΔHvap of 23.4 kJ/mol. What is the vapor pressure (in mmHg) of acetic acid at 30 oC?

FREE Expert Solution

For this problem, we can use the Clausius-Clapeyron Equation:



lnP2P1 = -HvapR[1T2-1T1]


where:

P1 = vapor pressure at T1

P2 = vapor pressure at T2

ΔHvap = heat of vaporization (in J/mol)

R = gas constant (8.314 J/mol•K)

T1 and T2 = temperature (in K).


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Problem Details

Acetic acid has a normal boiling point of 118 oC and a ΔHvap of 23.4 kJ/mol. What is the vapor pressure (in mmHg) of acetic acid at 30 oC?

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