Compound ∆Hf (kJ/mole) ∆S (J/mole K) CO2(g) –393.5 +213.8 CO2 (aq) –413.8 +117.6 N2O4 9.16 +304.4 NO2 33.2 240.1 CaCO3 –1207.6 91.7 CaO –634.9 +38.1 I2 (g) 62.42 260.69 HI(g) 26.5 206.6 H2 (g) 0 130.7 (a) For the following reactions, using the provided ∆H and ∆S data, determine whether each one would be spontaneous or nonspontaneous at 25°C CO2(g) à CO2(aq) N2O4(g)-------- à2 NO2(g) CaCO3(s) ----à CaO (s) + CO2(g) H2 (g) + I2(g)---- à 2 HI (g)
Compound ∆Hf (kJ/mole) ∆S (J/mole K) CO2(g) –393.5 +213.8 CO2 (aq) –413.8 +117.6 N2O4 9.16 +304.4 NO2 33.2 240.1 CaCO3 –1207.6 91.7 CaO –634.9 +38.1 I2 (g) 62.42 260.69 HI(g) 26.5 206.6 H2 (g) 0 130.7 (a) For the following reactions, using the provided ∆H and ∆S data, determine whether each one would be spontaneous or nonspontaneous at 25°C CO2(g) à CO2(aq) N2O4(g)-------- à2 NO2(g) CaCO3(s) ----à CaO (s) + CO2(g) H2 (g) + I2(g)---- à 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
Chapter6: Thermochemistry
Section: Chapter Questions
Problem 68E: In a coffee-cup calorimeter, 1.60 g NH4NO3 is mixed with 75.0 g water at an initial temperature of...
Related questions
Question
|
Compound |
∆Hf (kJ/mole) |
∆S (J/mole K) |
|
CO2(g) |
–393.5 |
+213.8 |
|
CO2 (aq) |
–413.8 |
+117.6 |
|
N2O4 |
9.16 |
+304.4 |
|
NO2 |
33.2 |
240.1 |
|
CaCO3 |
–1207.6 |
91.7 |
|
CaO |
–634.9 |
+38.1 |
|
I2 (g) |
62.42 |
260.69 |
|
HI(g) |
26.5 |
206.6 |
|
H2 (g) |
0 |
130.7 |
- (a) For the following reactions, using the provided ∆H and ∆S data, determine
whether each one would be spontaneous or nonspontaneous at 25°C CO2(g) à CO2(aq)
N2O4(g)-------- à2 NO2(g)
CaCO3(s) ----à CaO (s) + CO2(g)
H2 (g) + I2(g)---- à 2 HI (g)
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