COMEDK · Chemistry · 6. Thermodynamics (C)
A reaction is spontaneous at all temperature, when
- A \(\Delta H\) is -ve and \(\Delta S\) is + ve
- B \(\Delta H\) is + ve and \(\Delta S\) is - ve
- C Both \(\Delta H\) and \(\Delta S\) are - ve
- D Both \(\Delta H\) and \(\Delta S\) are \(+v e\)
Answer & Solution
Correct Answer
(A) \(\Delta H\) is -ve and \(\Delta S\) is + ve
Step-by-step Solution
Detailed explanation
For a reaction to be spontaneous change in Gibbs free energy should be negative. i.e. \(\Delta G=\Delta H-T \Delta S 0\) So, \(\Delta H=-\) ve and \(\Delta S=+\) ve
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