Question

At 25ºC, gas in a rigid cylinder with a movable piston has a volume of 145 mL and a pressure of 125 kPa. Then the gas is compressed to a volume of 80. ML. What is the new pressure of the gas if the temperature is held at 25ºC?

Answer 1

P2 = 226.6 kPa (Approx)

Step-by-step explanation:

Given:

Temperature t = 25ºC

Old volume v1 = 145 ml

Old pressure p1 = 125 KPa

New volume v2 = 80 ml

Find:

New pressure p2

Computation:

p1v1 = p2v2

125 x 145 = P2 x 80

P2 = 226.6 kPa (Approx)