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 :

Options

A. 910 K
B. 1110 K
C. 510 K
D. 710 K

Answer

B

Explanation

For a spontaneous process, `Delta G` must be negative.
Here, `Delta G` will be negative when `T delta S gt Delta H`
`Delta H = 170 kJ = 170000 J`
`Delta S = 170 JK^(-1) mol^(-1)`
`T Delta S gt Delta H` only when T = 1110 K