A gas is confined in a container with flexible walls, like a balloon. At 273 K...
A gas is confined in a container with flexible walls, like a balloon. At 273 K and 5 atm of pressure, the volume of the gas is 10.0 L. If the pressure remains constant while the temperature decreases to 250 K, you would expect the volume of the gas to _____.
Increase
Vary Widely
Remain Constanst
Decrease
Homework Answers
ANSWER: you would expect volume of gas will decrease.
Given
Initial temperature of a gas = T 1= 273 K
Final temperature of a gas =T 2 = 250 K
Initial volume of a gas =V 1 = 10.0 L
Final volume of a gas =V 2 = ?
Pressure of gas is a constant = 5 atm
We know that, Charle's law can be stated as at constant pressure , volume of the given mass of the gas is directly proportional to absolute temperature.
V 
T
From this , we can write
V 1 / T 1 = V 2 / T 2
10.0 L / 273 K = V 2 / 250 K
V 2 = (10.0 L / 273 K ) x 250 K
V 2 = 9.16 L
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