We’re being asked to determine the Pvap of water at 37°C. We’re given the heat of vaporization of water ΔHvap = 40.7 kJ/mol. We can use the Clausius-Clapeyron Equation to solve for the Pvap of water.
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).
If ΔHvap for water is 40.7 kJ/mole, calculate Pvap of water at 37°C.
(a) 6.90 torr
(b) 12.4 torr
(c) 18.7 torr
(d) 25.4 torr
(e) 52.6 torr
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