At a certain temperature 'T',the endothermic reaction `A rarrB` proceeds virtually to the end. Determine.
(i) Signof `DeltaS` for this reaction
(ii) sign of `DeltaS` for the reaction `B rarr A` at the temperature T, and
(iii) the possibility of reaction `B rarr A` proceeding at a low temperature.

Explanation

To solve the problem step by step, we will analyze the given endothermic reaction \( A \rightarrow B \) and its implications on entropy (\( \Delta S \)) and the reverse reaction \( B \rightarrow A \).

### Step 1: Determine the sign of \( \Delta S \) for the reaction \( A \rightarrow B \)

1. **Understanding Endothermic Reactions**: An endothermic reaction absorbs heat from the surroundings. This typically results in an increase in disorder or randomness in the system.

2. **Entropy Change**: For the reaction \( A \rightarrow B \), if it proceeds virtually to completion, it suggests that the products (B) have a higher degree of freedom or disorder compared to the reactants (A).

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