Enthalpy is an extensive property. In general, if enthalpy of an overall reaction `A rarr B` along one route is `Delta_(r) H " and Delta_(r) H_(1), Delta_(r) H_(2), Delta_(r) H_(3)`..... Represent enthalpies of intermediate reactions leading to product B. What will be the relation between `Delta_(r)H` overall reaction and `Delta_(r)H_(1), Delta_(r)H_(2)`... etc for intermediate reaction.

Explanation

To solve the question regarding the relationship between the enthalpy of an overall reaction and the enthalpies of intermediate reactions, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Enthalpy as an Extensive Property**:
- Enthalpy (H) is an extensive property, meaning it depends on the amount of substance present. Therefore, the total enthalpy change for a reaction is the sum of the enthalpy changes for each step in the reaction pathway.

2. **Applying Hess's Law**:
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