Chemical Forums
Chemistry Forums for Students => Physical Chemistry Forum => Topic started by: aria152 on September 25, 2005, 07:57:37 PM
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Here is what the question says:
Liquid water is vaporized at 100 degrees centigrade and 1.013 bar. The heat of vaporization is 40.69 kJ/mol. what are the values of Wrev per mole, delta U, delta H and q per mole.
As can be seen, it is an endothermic process so delta H = +40.69 kJ/mol
but where do i go with this ?? I am confused. 'coz it doesn't say anything about the initial and final volmes at all. I can calculate delta T using delta H = Cp. delta T but i don't see how that's going to help
What should I do ??
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it's done under constant pressure, the heat of vaporization is equal to delta H, being q. Other hints, the temperature is the same