A gas sample occupies 2.1 L at a pressure of 101 kPa. What volume will it occupy if the pressure is increased to 235 kPa?
A. 4.9 L
B. 1.6L
C. 1.2 L
D. 0.9 L

0.9L

Explanation:

Given parameters:

Initial volume = 2.1L

Initial pressure  = 101kPa

Final pressure  = 235kPa

Unknown:

Final volume  = ?

Solution:

The relationship is between pressure and volume. To solve this problem, we apply Boyle's law which states that "the volume of a fixed mass of a gas varies inversely as the pressure changes if the temperature is constant".

Mathematically;

        P₁V₁  = P₂V₂

P₁ is the initial pressure

V₁ is the initial volume

P₂ is the final pressure

V₂ is the final volume

 Now insert the parameters and solve;

        2.1 x 100 = 235 x V₂

            V₂ = 0.89L

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