4.(a) For the following reactions, using the provided AH and AS data, determinewhether each one would be spontaneous or nonspontaneous at 25°CCO2(g)→CO,(aq)N₂O4(g)→2 NO2(g)CaCO3(s) ----→ Cao (s) + CO2(g)H2 (g) + 12(g) → 2 HI (g)--(b) For each of the non-spontaneous reactions in part (a), calculate the temperatureat which they would be expected to become spontaneous.CompoundCO2(g)CO2 (aq)AHf (kJ/mole)AS (J/mole K)-393.5+213.8-413.8+117.6N₂O49.16+304.4NO₂33.2240.1CaCO3-1207.691.7CaO-634.9+38.112 (g)62.42260.69HI(g)26.5206.6H₂ (g)0130.7

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(a) For the following reactions, using the provided AH and AS data, determine whether each one would be spontaneous or nonspontaneous at 25°C COz(g) — > CO,(ag) N₂O4(g) →2 NO2(g) CaCO3(s) Cao (s) + CO2(g) H2(g) + 12(g) → 2 HI (g)

(a) For the following reactions, using the provided AH and AS data, determine whether each one would be spontaneous or nonspontaneous at 25°C COz(g) — > CO,(ag) N₂O4(g) →2 NO2(g) CaCO3(s) Cao (s) + CO2(g) H2(g) + 12(g) → 2 HI (g)

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Question

4.
(a) For the following reactions, using the provided AH and AS data, determine
whether each one would be spontaneous or nonspontaneous at 25°C
CO2(g)
→CO,(aq)
N₂O4(g)
→2 NO2(g)
CaCO3(s) ----→ Cao (s) + CO2(g)
H2 (g) + 12(g) → 2 HI (g)
--
(b) For each of the non-spontaneous reactions in part (a), calculate the temperature
at which they would be expected to become spontaneous.
Compound
CO2(g)
CO2 (aq)
AHf (kJ/mole)
AS (J/mole K)
-393.5
+213.8
-413.8
+117.6
N₂O4
9.16
+304.4
NO₂
33.2
240.1
CaCO3
-1207.6
91.7
CaO
-634.9
+38.1
12 (g)
62.42
260.69
HI(g)
26.5
206.6
H₂ (g)
0
130.7

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