Represent the potential energy/enthalpy change in the following process graphically
(a) Throwing a stone from the ground to roof.
(b) `1/2H_(2)(g) + 1/2Cl_(2)(g)` `HCl(g) Delta_(r)H^(@) = -93.2 kJ mol^(-1)`
In which of the process potential energy/enthalpy change in contributing factor to the spontaneity?

Explanation

To solve the question, we will represent the potential energy/enthalpy change graphically for both processes and analyze their spontaneity.

### Step-by-Step Solution:

#### Part (a): Throwing a Stone from the Ground to the Roof

1. **Identify the Initial and Final States**:
- The initial state is when the stone is on the ground (let's denote this as E_initial).
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