Two moles of a perfect gas undergo the following processes:
a. A reversible isobaric expansion from `(1.0 atm, 20.0L)` to `(1.0 atm, 40.0L)`
b. A reversible isochroic change of state from `(1.0 atm, 40.0L)` to `(0.5 atm, 40.0 L)`
c. A reversible isothermal expansion from `(0.5 atm, 40.0 L) to(1.0 atm, 20.0 L)`
i. Sketch with lables each of the processes on the same `P -V` diagram.
ii. Calculate the total work `(w)` and the total heat change `(q)` involved in the above process.
iii. What will be the values of `DeltaH` for the overall process?

Explanation

To solve the problem step by step, we will analyze each process and calculate the required values.

### Step 1: Sketch the P-V Diagram
1. **Identify the points**:
- Point A: (1.0 atm, 20.0 L)
- Point B: (1.0 atm, 40.0 L)
- Point C: (0.5 atm, 40.0 L)

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