JEE MAIN - Chemistry (2019 - 10th April Morning Slot - No. 11)
A process will be spontaneous at all temperatures if :
$$\Delta $$H < 0 and $$\Delta $$S > 0
$$\Delta $$H < 0 and $$\Delta $$S < 0
$$\Delta $$H > 0 and $$\Delta $$S < 0
$$\Delta $$H > 0 and $$\Delta $$S > 0
Explanation
A reaction is spontaneous if $$\Delta $$G is negative.
and we know that
$$\Delta $$G = $$\Delta $$H – T$$\Delta $$S
If $$\Delta $$H = –ve and $$\Delta $$S = + ve then at all the temperature the process will be spontaneous.
and we know that
$$\Delta $$G = $$\Delta $$H – T$$\Delta $$S
If $$\Delta $$H = –ve and $$\Delta $$S = + ve then at all the temperature the process will be spontaneous.
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