A syringe initially has 5 kPa of pressure exerted on it and has a volume of 6 mL of air in it. When the pressure on the syringe is reduced to 2.5 KPa what will the new volume of gas be?

Question

A syringe initially has 5 kPa of pressure exerted on it and has a volume of 6 mL of air in it. When the pressure on the syringe is reduced to 2.5 KPa what will the new volume of gas be?

Answer 1

The equation P_iV_i=P₂V₂ can be used to find the volume.

By changing the subject of the formula you get:

PiVi/P2=V2

5KPa*6mL/2.5KPa=12mL

V₂=12mL