Question

For a given mass of gas at constant temperature, the plot of PV against pressure is:

• A. a rectangular hyperbola
• B. a straight line passing through the axis
• C. a straight line parallel to the pressure axis
• D. dependent on the nature of the gas

Answer 1

Answer: (C)

a straight line parallel to the pressure axis

For a given mass of gas at a constant temperature, the plot of PV against pressure is a straight line parallel to the pressure axis. This is because PV remains constant with P. This is explained by Boyle's law.

The ideal gas equation is $PV=nRT$.

At constant temperature, $nRT=constant$.

Hence, $PV=$ constant.

Hence, the correct answer is option $\text{C}$.