Question

A certain mass of gas occupies 2litres at 27 degree celsius and 100 pascle .Find the temperature when volume and pressure becomes half of their initial value.

Answer 1

From the Ideal gas equation,

P x V / T = constant.

Now, initially,

P = 100 pascal

V = 2 L

T = 27+273 K = 300 K

Then, P = 50 pascal

V = 1 L

Putting them in the equation, T = 300/4 K = 75 K = 75 - 273 degree C = - 198 degree C