Thermodynamics And Thermochemistry
- Thermodynamics And Thermochemistry Result Question 1
- Thermodynamics and Thermochemistry - Result Question 65
- Thermodynamics and Thermochemistry - Result Question 66
- Thermodynamics and Thermochemistry - Result Question 67
- Thermodynamics And Thermochemistry Result Question 2
- Thermodynamics And Thermochemistry Result Question 3
- Thermodynamics And Thermochemistry Result Question 4
- Thermodynamics And Thermochemistry Result Question 5
- Thermodynamics and Thermochemistry - Result Question 1
- Thermodynamics And Thermochemistry Result Question 6
- Thermodynamics And Thermochemistry Result Question 7
- Thermodynamics And Thermochemistry Result Question 8
- Thermodynamics And Thermochemistry Result Question 9
- Thermodynamics And Thermochemistry Result Question 10
- Thermodynamics and Thermochemistry - Result Question 2
- Thermodynamics And Thermochemistry Result Question 11
- Thermodynamics And Thermochemistry Result Question 12
- Thermodynamics And Thermochemistry Result Question 13
- Thermodynamics And Thermochemistry Result Question 14
- Thermodynamics And Thermochemistry Result Question 15
- Thermodynamics and Thermochemistry - Result Question 3
- Thermodynamics And Thermochemistry Result Question 16
- Thermodynamics And Thermochemistry Result Question 17
- Thermodynamics And Thermochemistry Result Question 18
- Thermodynamics And Thermochemistry Result Question 19
- Thermodynamics And Thermochemistry Result Question 20
- Thermodynamics and Thermochemistry - Result Question 4
- Thermodynamics And Thermochemistry Result Question 21
- Thermodynamics And Thermochemistry Result Question 22
- Thermodynamics And Thermochemistry Result Question 23
- Thermodynamics And Thermochemistry Result Question 24
- Thermodynamics And Thermochemistry Result Question 25
- Thermodynamics and Thermochemistry - Result Question 5
- Thermodynamics And Thermochemistry Result Question 26
- Thermodynamics And Thermochemistry Result Question 27
- Thermodynamics And Thermochemistry Result Question 28
- Thermodynamics And Thermochemistry Result Question 29
- Thermodynamics And Thermochemistry Result Question 30
- Thermodynamics and Thermochemistry - Result Question 6
- Thermodynamics And Thermochemistry Result Question 31
- Thermodynamics And Thermochemistry Result Question 32
- Thermodynamics And Thermochemistry Result Question 33
- Thermodynamics And Thermochemistry Result Question 34
- Thermodynamics and Thermochemistry - Result Question 7
- Thermodynamics and Thermochemistry - Result Question 8
- Thermodynamics and Thermochemistry - Result Question 9
- Thermodynamics and Thermochemistry - Result Question 10
- Thermodynamics and Thermochemistry - Result Question 11
- Thermodynamics and Thermochemistry - Result Question 12
- Thermodynamics and Thermochemistry - Result Question 13
- Thermodynamics and Thermochemistry - Result Question 14
- Thermodynamics and Thermochemistry - Result Question 15
- Thermodynamics and Thermochemistry - Result Question 16
- Thermodynamics and Thermochemistry - Result Question 17
- Thermodynamics and Thermochemistry - Result Question 18
- Thermodynamics and Thermochemistry - Result Question 19
- Thermodynamics and Thermochemistry - Result Question 20
- Thermodynamics and Thermochemistry - Result Question 21
- Thermodynamics and Thermochemistry - Result Question 22
- Thermodynamics and Thermochemistry - Result Question 23
- Thermodynamics and Thermochemistry - Result Question 24
- Thermodynamics and Thermochemistry - Result Question 25
- Thermodynamics and Thermochemistry - Result Question 26
- Thermodynamics and Thermochemistry - Result Question 27
- Thermodynamics and Thermochemistry - Result Question 28
- Thermodynamics and Thermochemistry - Result Question 29
- Thermodynamics and Thermochemistry - Result Question 30
- Thermodynamics and Thermochemistry - Result Question 31
- Thermodynamics and Thermochemistry - Result Question 32
- Thermodynamics and Thermochemistry - Result Question 33
- Thermodynamics and Thermochemistry - Result Question 34
- Thermodynamics and Thermochemistry - Result Question 35
- Thermodynamics and Thermochemistry - Result Question 36
- Thermodynamics and Thermochemistry - Result Question 37
- Thermodynamics and Thermochemistry - Result Question 38
- Thermodynamics and Thermochemistry - Result Question 39
- Thermodynamics and Thermochemistry - Result Question 40
- Thermodynamics and Thermochemistry - Result Question 41
- Thermodynamics and Thermochemistry - Result Question 42
- Thermodynamics and Thermochemistry - Result Question 43
- Thermodynamics and Thermochemistry - Result Question 44
- Thermodynamics and Thermochemistry - Result Question 45
- Thermodynamics and Thermochemistry - Result Question 46
- Thermodynamics and Thermochemistry - Result Question 47
- Thermodynamics and Thermochemistry - Result Question 48
- Thermodynamics and Thermochemistry - Result Question 49
- Thermodynamics and Thermochemistry - Result Question 50
- Thermodynamics and Thermochemistry - Result Question 51
- Thermodynamics and Thermochemistry - Result Question 52
- Thermodynamics and Thermochemistry - Result Question 53
- Thermodynamics and Thermochemistry - Result Question 54
- Thermodynamics and Thermochemistry - Result Question 55 — JEE PYQ Chapterwise
- Thermodynamics and Thermochemistry - Result Question 55 — JEE PYQ Chapterwise
- Thermodynamics and Thermochemistry - Result Question 55 — JEE PYQ Chapterwise
- Thermodynamics and Thermochemistry - Result Question 58 — JEE PYQ Chapterwise
- Thermodynamics and Thermochemistry - Result Question 58 — JEE PYQ Chapterwise
- Thermodynamics and Thermochemistry - Result Question 58 — JEE PYQ Chapterwise
- Thermodynamics and Thermochemistry - Result Question 61
- Thermodynamics and Thermochemistry - Result Question 62
- Thermodynamics and Thermochemistry - Result Question 63
- Thermodynamics and Thermochemistry - Result Question 64
- Thermodynamics and Thermochemistry - Result Question 68
- Thermodynamics and Thermochemistry - Result Question 69
- Thermodynamics and Thermochemistry - Result Question 70
- Thermodynamics and Thermochemistry - Result Question 71
- Thermodynamics and Thermochemistry - Result Question 72
- Thermodynamics and Thermochemistry - Result Question 58 — JEE PYQ Chapterwise
- Thermodynamics and Thermochemistry - Result Question 75
Thermodynamics and Thermochemistry - Result Question 70
70. Show that the reaction, $CO(g)+\frac{1}{2} O _2(g) \longrightarrow CO _2(g)$ at $300 K$, is spontaneous and exothermic, when the standard entropy change is $-0.094$ $ kJ $ $mol^{-1} $ $K^{-1}$. The standard Gibbs’ free energies of formation for $CO _2$ and $CO$ are $-394.4$ and $-137.2 $ $kJ$ $ mol^{-1}$, respectively.
(2000, 3M)
Show Answer
Answer:
Correct Answer: 70. $(-285.4$ $ kJ)$
Solution:
$\Delta _r G^{\circ}=\Delta _f G^{\circ}$ (products) $-\Delta _f G^{\circ}$ (reactants)
$ =-394.4-(-137.2)=-257.2$ $ kJ < 0 $
The above negative value of $\Delta G$ indicates that the process is spontaneous.
Also, $\Delta G^{\circ}=\Delta H^{\circ}-T \Delta S^{\circ}$
$ \begin{aligned} \Rightarrow \quad \Delta H^{\circ} & =\Delta G^{\circ}+T \Delta S^{\circ} \\ & =-257.2+300(-0.094) \\ & =-285.4 kJ < 0 \end{aligned} $
BETA
