Question

Ten moles of an ideal gas are filled in a closed vessel. The vessel has cylinder and piston type arrangement and pressure of the gas remains constant at 0.821 atm. Which of the following graph represents correct variation of log V vs log T?

(V = Volume in litre and T = temperature in Kelvin)

• A.
• B.
• C.
• D.

Answer 1

Answer: (A)

$logV\propto logT$ at constant pressure

$PV=nRT$

$0.821V=10\times 0.082\times T$

$\frac{V}{T}=$ constant = 1

Slope of the line will be 1

i.e., angle will be $45^{\circ }$ .