1) Why is the heat of vaporization of water (40700 Jmol -1 ) so much greater tha
ID: 837393 • Letter: 1
Question
1) Why is the heat of vaporization of water (40700 Jmol-1) so much greater than for nitrogen?
2) Write an equation for the vaproization of nitrogen in warm water. Is the process exothermic or endothermic?
3) Why would the mass of water be less at the end of the expiriment mentioned in question 2?
Explanation / Answer
The heat of vaporization of water is higher than that of liquid nitrogen because water molecules form H-bonds and hence it requires more energy(heat) to break those bonds. N2(l) + Q --> N2(g) where Q = Heat energy This process id endothermic since no=itrogen absorbs the heat released by warm water. Reduction in mass of water maybe due to loss of water due to splattering and fog produced.
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