MCQ
For a reaction to occur spontaneously
- ✓$(\Delta H - T\Delta S)$ must be negative
- B$(\Delta H + T\Delta S)$ must be negative
- C$\Delta H$ must be negative
- D$\Delta S$ must be negative
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Assertion $A$ : Aryl halides cannot be prepared by replacement of hydroxyl group of phenol by halogen atom.
Reason $R$ : Phenols react with halogen acids violently. In the light of the above statements, choose the most appropriate from the options given below:
$\left[\text { Given }: E _{ Ag ^{+} / Ag }^{\Theta}=0.80 V \text { and } \frac{2.303 \,RT }{ F }=0.06\,V \right]$