JEE Mains · Chemistry · STD 11 - 5. Thermodynamics and thermochemistry
The effect of temperature on spontaneity of reactions are represented as :
| Case | ΔH | ΔS | Temperature | Spontaneity |
| (A) | + | - | any T | Non spontaneous |
| (B) | + | + | low T | spontaneous |
| (C) | - | - | low T | Non spontaneous |
| (D) | - | + | any T | spontaneous |
- A (B) and (C) only
- B (B) and (D) only
- C (A) and (D) only
- D (A) and (C) only
Answer & Solution
Correct Answer
(A) (B) and (C) only
Step-by-step Solution
Detailed explanation
\(\because \Delta \mathrm{G}=\Delta \mathrm{H}-\mathrm{T} \Delta \mathrm{~S}\) For spontaneity of reaction: \(\Delta \mathrm{G}=-\mathrm{ve}\)
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