Which of the following conditions leads to a spontaneous process at all temperature

Options

A. `Delta H` is positive and `Delta S` is negative
B. `Delta H` is negative and `Delta S` is positive.
C. Both `Delta H` and `Delta S` are negative.
D. Both `Delta H` and `Delta S` are positive

Answer

B

Explanation

`Delta G = Delta H = T Delta S`
`= (-ve) - (+ ve) (+ ve)`
`= - ve`
Thus, `Delta G` is always negative, reaction proceeds spontaneously at all temperatures.