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Had a chemistry worksheet and am stuck on these last few problems. Please help with any you can help with. Will rate!!

a) Why can a change be spontaneous even though the system entropy decreases? Identify a spontaneous change in which the entropy of the system decreases.

b) The heat of vaporization of 1.0 mole of water at 100 degrees celcius and 1.0 atm is 40.6 kJ. Calculate the change in entropy for the process H20(l)-->H20(g).

c) Calculate the free energy change for the following reaction and predict whether the reaction occurs spontaneously at 25 degrees celcius. H2(g)+CO2(g)-->H20(g)+CO(g); ?H=41.8 kJ, ?S=42.1 J/K

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Category:- Chemistry
Reference No.:- M9458114

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