MCQ
The important considerations in deciding if a reaction will be spontaneous are :
- AStability state of reactants
- BEnergy gained heat evolved
- ✓Exothermic energy randomness of the products
- DEndothermic energy structure of the products
✓
Answer
Correct option: C.
Exothermic energy randomness of the products
$\triangle G = \triangle H - T\triangle S,$ for a reaction to be spontaneous $\triangle G,$ should be negative.
it is guaranteed only if both terms in $\text{RHS}$ is negative.
therefore $\triangle H$ should be negative and $\triangle S$ should be positive.
Negative $\triangle H$ implies exothermic energy and positive $\triangle S$ implies randomness of the product.
it is guaranteed only if both terms in $\text{RHS}$ is negative.
therefore $\triangle H$ should be negative and $\triangle S$ should be positive.
Negative $\triangle H$ implies exothermic energy and positive $\triangle S$ implies randomness of the product.
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