2) a) A plot of DG° vs. Temperature yields a slope of –80 J/K. Is the...
2) a) A plot of DG° vs. Temperature yields a slope of –80 J/K.
Is the DS° of the reaction positive or negative? Why? And under
what conditions?
b) For the reaction: Cl2(g) --> 2Cl(g), predict the sign of DH
and DS.
Homework Answers
Ans 2 a) the slope of delta G versus temperature graph suggests the change in entropy that is delta S. The slope is -80 j/k which indicates negative entropy change.
Entropy is degree randomness or disorderedness of a system. The negative entropy change is indicative of less disorderedness or decrease in volume of products.
b) delta H value for this reaction will be positive as energy is absorbed by the chlorine molecule to break the bond and to convert it into 2 chlorine atoms
The entropy change is also positive because 2 atoms are more disordered and random than a single molecule
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