Which of the following conditions is/are favourable for the feasibility of a reaction?

Options

A. `Delta H= - ve, T Delta S= +ve`
B. `Delta H = -ve, T Delta S= -ve, T Delta S lt Delta H`
C. `Delta H = +ve, T Delta S = +ve, T Delta S lt Delta H`
D. `Delta H = +ve, T Delta S= +ve, T Delta S gt Delta H`

Answer

A, B, D

Explanation

`Delta H lt 0, T Delta S gt 0 rArr Delta H - T Delta S lt 0`
`Delta H lt 0, T Delta S lt 0`
`rArr Delta H - T Delta S lt 0` if `T Delta S lt Delta H`
`Delta H gt 0, T Delta S gt 0`
`rArr Delta H - T Delta S lt 0` if `T Delta S gt Delta H`