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18 Dec 2019
The vapor pressure of ethanol is 1.00 x 102 mmHg at34.90oC. What is its vapor pressure at 51.73oC? (ÎHvap for ethanol is 39.3 Kj/mol.)
Given the vapor pressure at one temperature, P1, we cancalculate the vapor pressure at a second temperature, P2.
In (P1/P2) = ÎHvap/R (1/T2 - 1/T1)
Where,
ÎHvap for ethanol must have the units of J/mol.
R = 8.314 J/K.mol .. The temperatures must be in Kelvins.
Solve for P2, What is the vapor pressure of ethanol at 51.73oC?
The vapor pressure of ethanol is 1.00 x 102 mmHg at34.90oC. What is its vapor pressure at 51.73oC? (ÎHvap for ethanol is 39.3 Kj/mol.)
Given the vapor pressure at one temperature, P1, we cancalculate the vapor pressure at a second temperature, P2.
In (P1/P2) = ÎHvap/R (1/T2 - 1/T1)
Where,
ÎHvap for ethanol must have the units of J/mol.
R = 8.314 J/K.mol .. The temperatures must be in Kelvins.
Solve for P2, What is the vapor pressure of ethanol at 51.73oC?
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