Home
Class 12
CHEMISTRY
The values of Delta H and Delta S for th...

The values of `Delta H and Delta S` for the reaction. `C("graphite") + CO_(2)(g) rarr 2CO(g)` are 170 kJ and `170 JK^(-1)`, respectively. This reaction will be spontaneous at :

A

910 K

B

1110 K

C

510 K

D

710 K

Text Solution

Verified by Experts

The correct Answer is:
B
`Delta G = Delta H - T Delta S`
`0 = (170 xx 10^(3) J) - T(170 JK^(-1))`
T = 1000 K
For spontaneity, `Delta G` is -ve
Hence T should be `gt 1000 K`.
Promotional Banner

Topper's Solved these Questions

  • THERMODYNAMICS

    MODERN PUBLICATION|Exercise Multiple Choice Questions (Level-II)|85 Videos

  • THERMODYNAMICS

    MODERN PUBLICATION|Exercise Multiple Choice Questions (Level-III)|10 Videos

  • THE SOLID STATE

    MODERN PUBLICATION|Exercise RECENT EXAMINATION QUESTIONS|11 Videos

  • UNIT TEST - 3

    MODERN PUBLICATION|Exercise MULTIPLE CHOICE QUESTIONS|59 Videos

Similar Questions

Explore conceptually related problems

For the reaction : C(s) + O_(2)(g) rarr CO_(2)(g)

The enthalpy and entropy change for the reaction : Br_(2)(l) + Cl_(2)(g) rarr 2BrCl(g) are 30 kJ mol^(-1) and 105 JK^(-1) respectively. The temperature at which the reaction will be in equilibrium is :

The value of enthalpy change (Delta H) for the reaction : C_(2)H_(5)OH(l) + 3O_(2)(g) rarr 2CO_(2)(g) + 3H_(2)O(l) at 27^(@)C is - 1366.5 kJ mol^(-1) . The value of internal energy change for the above reaction at the temperature will be :

Heat of reaction for, CO(g) 1/2 O_(2)(g) rarr CO_(2)(g) at constant V is -67.71 kcal at 17^(@)C . The heat of reaction at constant P at 17^(@)C

The standard Gibbs free energies (Delta_(f) G^(@)) for the formation of SO_(2)(g) and SO_(3)(g) are -300.0 and -371.0 kJ mol^(-1) at 300 K respectively. Delta G for the reaction. 2SO_(2)(g) + O_(2)(g) hArr 2SO_(3)(g) is