Q. When ΔH is negative and ΔS is positive, the reaction is:

जब ΔH ऋणात्मक है और ΔS धनात्मक है, तो प्रतिक्रिया होती है:

A
Always spontaneous
सदैव सहज
B
Never spontaneous
कभी भी स्वतःस्फूर्त नहीं
C
Spontaneous only at high temperatures
केवल उच्च तापमान पर स्वतःस्फूर्त
D
Spontaneous only at low temperatures
केवल कम तापमान पर सहज

Explanation

Gibbs free energy equation:

ΔG = ΔH - TΔS

If ΔH < 0 (exothermic) and ΔS > 0 (entropy increases), then ΔG is always negative for all temperatures.
Thus, the reaction is spontaneous under all conditions.

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