Chapter 2.1, Problem 24ES

The accompanying figure shows the graph of the pressure $p$ in atmospheres (atm) versus the volume $V$ in liters $\left(\text{L}\right)$ of $1$ mole of an ideal gas at a constant temperature of $300\text{ K}$ (kelvins). Use the line segments shown in the figure to estimate the rate of change of pressure with respect to volume at the points where $V=10\text{ L}$ and $V=25\text{ L}$ .