CUET · CHEMISTRY · PYQ PAPER 2023
\(\Delta G = \Delta H – T\Delta S\)
When \(\Delta H = -ve\) and \(\Delta S = -ve\), then the value of \(\Delta G\) will :
- A always remain + ve
- B always remain – ve
- C become – ve at lower temperature
- D become – ve at higher temperature
Answer & Solution
Correct Answer
(A) always remain + ve
Step-by-step Solution
Detailed explanation
\(\Delta G = \Delta H - T\Delta S\) \(\Delta G = (-ve) - T(-ve)\) \(\Delta G = (-ve) + T(positive)\) When \(T\) is low, \(|\Delta H| > |T\Delta S|\), so \(\Delta G\) becomes \(-ve\). When \(T\) is high, \(|\Delta H| \(\Delta G\) will become \(-ve\) at lower temperature.
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