Question

At 100 K and 0.1 atmospheric pressure, the volume of helium gas is 10 litres. If volume and pressure are doubled, its temperature will change to

• A. 400 K
• B. 127 K
• C. 200 K
• D. 25 K

Answer 1

Answer: (A)

400 K

Answer 2

$PV = \mu RT$ ̃ $PV \propto T$

If P and V are doubled then T becomes four times i.e., $T_{2} = 4T_{1}$ $= 4 \times 100 = 400K.$