Question

A rigid cylinder with a movable piston contains a sample of hydrogen gas.

330 K this sample has a pressure of 150 K PA and a volume of 3.50 L. What is the volume of the sample at STP

Answer 1

The volume of gas at STP is 4.3 L.

Step-by-step explanation:

*initial temperature of gas = 330 K

*Initial pressure = 150 Kpa (150/101.325 = 1.4804 atm)

*Initial volume = 3.5 L

*New pressure = 1 atm

*New temperature = 273.15 K

*To Find: New volume

*Formula

P₁V₁ / T₁ = P₂V₂ /T₂

*Solution:

*V₂ = P₁V₁. T₂ / T₁ . P₂

*V₂ = 1.4804 atm. 3.5 L . 273.15 K / 330 K . 1 atm

*V₂ = 1415.3 L / 330

*V₂ = 4.3 L

Therefore, The volume of gas at STP is 4.3 L.