Gases

Gas Laws Worksheet #1
Boyle’s Law describes the relationship between ___________ and _____________, and they are
___________ proportional. The variables __________ and____________ remain constant.
1) If 50 mL of Oxygen gas is compressed from 20 atm of pressure to 40 atm of pressure, what is the new volume
at constant temperature?

2) If a gas samplein a balloon had a volume of 100 mL and a pressure of 3 atm. It was then compressed to a
pressure of 10 atm, what would be its volume?

Charles Law describes the relationshipbetween ___________ and ___________ , and they are _________
proportional. The variables _________ and __________ remain constant.
1) A gas occupies a volume of 100 mL at 300 K. Atwhat temperature will the gas have a volume of 200 mL?

2) If the volume of a gas sample is 500 mL at 25° C what will be its volume at 50° C?

Gay-Lussac’s Law describes therelationship between ____________ and ___________, and they are
_____________ proportional. The variables ____________ and ___________ remain constant.
1) 10.0 L of a gas is foundto exert 97.0 kPa at 25.0° C. What would be the required temperature to change the
pressure to standard pressure?

2) 5.00 L of a gas is collected at 22.0° C and 745.0 mmHg.When the temperature is changed to standard what is
the new pressure?

The combined gas law puts the three laws together in one equation. The equation for the combined gas lawis:

1) At 275 mmHg and 327° C, you have a 22 L Mylar balloon filled with helium gas. If the pressure is increased to
325 mmHg with a temperature increase to 357° C, what will thenew volume be?

2) At 123°C and 142 mmHg, a gas has a volume of 16 L. At what temperature will the gas have a volume of 13.75
L, if the pressure increases to 180 mmHg.