For each reaction, calculate the value of Gibb's Free Energy (ΔG) and predict wether the reaction is spontaneous or not spontaneous in the forward direction.                                              ΔH(kJ)   TΔS(kJ) a.) H2O (I) ——> H2O (g)        284.2.       41.8 b.) 2 Fe(s)+1/2 N2––>          -3.76.       -14.63     Fe2N(s)  c.) C6H14(g)––>6 C(s)+       166.9.      167.4      7 H2(g) d.) HCI (g)+H2O(I)––>           -75.2.      -39.3      H3O^+(aq)+CI^-(aq)

Chemistry: Principles and Reactions
8th Edition
ISBN:9781305079373
Author:William L. Masterton, Cecile N. Hurley
Publisher:William L. Masterton, Cecile N. Hurley
Chapter16: Spontaneity Of Reaction
Section: Chapter Questions
Problem 68QAP: Given that H f for HF(aq) is -320.1 kJ/mol and S for HF(aq) is 88.7 J/mol K, find Ka for HF at 25C.
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For each reaction, calculate the value of Gibb's Free Energy (ΔG) and predict wether the reaction is spontaneous or not spontaneous in the forward direction.

                                             ΔH(kJ)   TΔS(kJ)

a.) H2O (I) ——> H2O (g)        284.2.       41.8

b.) 2 Fe(s)+1/2 N2––>          -3.76.       -14.63

    Fe2N(s) 

c.) C6H14(g)––>6 C(s)+       166.9.      167.4

     7 H2(g)

d.) HCI (g)+H2O(I)––>           -75.2.      -39.3

     H3O^+(aq)+CI^-(aq)

(C) Since AG
(D) AGactin = AH
reaction IS negative at 298 K, the reaction is spontaneous.
reartion TAS
= -41.17 k) - 298K x(-0.04192 kJ/K)
= +42.67 k)
reaction
Since AG reaction IS positive, the reaction is nonspontaneous at 2000K.
MASTER THE SKILL
Let's Engage &Perform
Performance Task
Total: 10
1. For each reaction, calculate the value of Gibb's Free Energy (AG) and predict whether the reaction is spontaneous or not
spontaneous in the forward direction. (5 points each)
AH (kl)
TAS (k)
41.8
284,2
a) H20 (1)→H20 (g)
b) 2 Fe(s)+ ½ Ng - Fe2N (s)
c) CGH14 (g)-6 C(s) +7 H2 (g)
d) HCI (g) + Hg0 (1) HgO" (aq) + CI-(aq
-14.63
-3.76
166.9
167.4
-75,2
-39.3
Transcribed Image Text:(C) Since AG (D) AGactin = AH reaction IS negative at 298 K, the reaction is spontaneous. reartion TAS = -41.17 k) - 298K x(-0.04192 kJ/K) = +42.67 k) reaction Since AG reaction IS positive, the reaction is nonspontaneous at 2000K. MASTER THE SKILL Let's Engage &Perform Performance Task Total: 10 1. For each reaction, calculate the value of Gibb's Free Energy (AG) and predict whether the reaction is spontaneous or not spontaneous in the forward direction. (5 points each) AH (kl) TAS (k) 41.8 284,2 a) H20 (1)→H20 (g) b) 2 Fe(s)+ ½ Ng - Fe2N (s) c) CGH14 (g)-6 C(s) +7 H2 (g) d) HCI (g) + Hg0 (1) HgO" (aq) + CI-(aq -14.63 -3.76 166.9 167.4 -75,2 -39.3
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