The graph of volume versus temperature for an ideal gas at constant pressure takes the shape of a straight line. This relationship is described by Charles’s Law, which states that the volume of an ideal gas is directly proportional to its absolute temperature, provided the pressure remains constant.
To visualize this, you’ll draw a graph where the x-axis represents temperature (in Kelvin) and the y-axis represents volume. As the temperature increases, the volume also increases linearly. The straight line will pass through the origin (0,0), indicating that at absolute zero (0 Kelvin), the volume theoretically approaches zero.
In essence, the slope of the line reflects the proportional relationship, demonstrating that for any increase in temperature, there is a corresponding increase in volume. This linear trend continues as the temperature rises, confirming the predictable behavior of gases under constant pressure.