Question

A sample of oxygen gas has a volume of 12.0 L at 600 mmHg. What is the new pressure when the volume changes to 36.0 L at a constant and n?

Answer 1

Here, the Temperature (T) of the gas and the moles (n) of the gas are fixed whereas the Pressure (P) and the Volume (V) are changing. Thus, we will use Boyle's Law here, according to which,

Here, P_i is the initial pressure = 600 mmHg,

V_i is the initial volume = 12.0 L

P_f is the final pressure which we need to find out.

V_f is the final volume = 36.0 L

Thus, using the Boyle's law, we will have,

Thus, the final pressure will be 200 mmHg