Homework #4a Due Monday, July 16, 2018 SHOW YOUR WORK!!! Name 1. (3 points) Dete

Question

Homework #4a Due Monday, July 16, 2018 SHOW YOUR WORK!!! Name 1. (3 points) Determine whether each of the following has an increase or a decrease in entropy a. 2NH,OH (aq) + H,co, (aq) (NHJCO, (aq) + 2H20 (l) b. 2HNO3 (aq) + 6HC? (aq)-. 2NO (g) + 3Cl; (g)-4H20 (1) c. CaO (s)+CO(g)-CaCO, (s) d. KBr (s)(Br (a) e. N0, (g) 2NO- (g f. 2C (s) 02 (g) 2CO (2) 2. (4 points) For a process at 451 K and constant pressure, the AS+326 J/K and the S 122 J/K a. Calculate the ?-vene for the reaction. b. Calculate the ??'ys for the reaction at 451 K. c. At what temperature range is the reaction spontaneous? d. Calculate the ?Go for the reaction.

Explanation / Answer

Ans 1 :

Entropy is the degree of disorderness or randomness of the system.

When there is increase in gaseous or aqueous particles in the system , the entropy is said to be increased.

But when there is increase of solid particles , the entropy of the system decreases.

So here , in these reactions , entropy :

a) decreases

b) increases

c) decreases

d) increases

e) increases

f) increases

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