Question

Which of the following volume (V) temperature (T) plots represents the behaviour of one mole of an ideal gas at the atmosphere pressure?

• A.
• B.
• C.
• D.

Answer 1

The correct option is C

Option (b) and (d) are ruled out on the basis that at the initial point of 273K, 1 atm, for 1.0 mole volume must be 22.4 L, and it should increase with rise in temperature.
Option (a) is ruled out on the basis that initial and final points are not connected by the ideal gas equation $V\propto T$, i.e, $\frac{V}{T}$ do not have the same value at the two points.
In option (c), at the initial point, the volume is 22.4 L as required by ideal gas equation and $\left(\frac{V}{T}\right)$ have the same value at both initial and final points.