Boyle’s law states for a fixed amount of an enclosed ideal gas, its absolute pressure is inversely proportional to its volume at a constant temperature. The equation of Boyle’s law is given below.
PV = CONSTANT
The graph of Boyle’s law is known as pressure-volume graph or PV curve. Pressure increases with a decrease in volume, and vice versa. Thus, pressure is inversely proportional to volume. Other parameters (temperature and amount of gas) are constant in the graph. The equation of the curve is PV = k , which is the equation of Boyle’s law. Graphs of Boyle’s law can be plotted at different temperatures. Each curve in the graphs below is at a constant temperature and such curves are called isotherms.