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Qube

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## Homework Statement

Determine the vapor pressure of water at 50 degrees C. The molar heat of vaporization of water is 40.7 kJ/mol.

## Homework Equations

Clausius-Clapeyron equation.

## The Attempt at a Solution

P1 = 760 mm Hg

T1 = 373 K

P2 = ?

T2 = 323 K

ln (P2/760) = ln P2 - ln 760 = -(40700/8.31)(1/323 - 1/373). I'm taking the change in temperature (delta T, or final minus initial temperature, and accordingly I put a negative out in front of the right side of the equation).

ln P2 = 4.6

e^4.6 = P2 = 100 mm Hg (approximately).

Is this correct?