P4 (g)  +   10 Cl2 (g)   →    4 PCl5 (g)   a) Without consulting the tables, what sign do you expect for the change in entropy (delta S) for the following reaction? a. none of these b. positive c. can not be determined (too close to estimate) d. negative   b) calculate the change in entropy (delta S) for the following reaction, using the thermodynamic tables   a. – 1098 J/K b. – 113 J/K c. – 1.50 x 10^2 J/K d. 856 J/K e. none of these f. 1412 J/K g. 2510 J/K h. 3922 J/K i. – 856 J/K

Chemistry & Chemical Reactivity
9th Edition
ISBN:9781133949640
Author:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher:John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Chapter18: Principles Of Chemical Reactivity: Entropy And Free Energy
Section18.4: Entropy Measurement And Values
Problem 1RC: Without looking up their standard entropies in reference tables, identify which of the following...
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 P4 (g)  +   10 Cl2 (g)   →    4 PCl5 (g)  

a) Without consulting the tables, what sign do you expect for the change in entropy (delta S) for the following reaction?

a. none of these
b. positive
c. can not be determined (too close to estimate)
d. negative
 
b) calculate the change in entropy (delta S) for the following reaction, using the thermodynamic tables
 
a. – 1098 J/K
b. – 113 J/K
c. – 1.50 x 10^2 J/K
d. 856 J/K
e. none of these
f. 1412 J/K
g. 2510 J/K
h. 3922 J/K
i. – 856 J/K
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