Gas Law Relationships
This law shows an inverse relationship between pressure and volume.
Boyle's Law
Standard temperature
273 K or 273.15 K
If 22.5 L of nitrogen at 748 mm Hg are compressed to 725 mm Hg at constant temperature. What is the new volume?
23.2 L
Which law is needed?
A container of gas is initially at 0.500 atm and 25 ˚C. What will the pressure be at 125 ˚C? Assume the volume and amount of gas remains constant.
Gay-Lussac's Law
Increase
A gas occupies 53.2 L at a pressure of 0.70 atm with a constant temperature. What will be the new volume if the pressure increases to 1.72 atm?
P1= 0.70 atm
P2 = 1.72 atm
V1 = 53.2 L
V2= ?
48.74 degrees Celsius
321.74 OR 321.89
Convert 325 K to Celsius
52 C OR 51.85 C
An increase in temperature will cause the movement of particles to ______________.
increase
A weather balloon contains 59.5 L of helium at sea level, where the atmospheric pressure is 101.3 kPa. The balloon is released from a 4000m mountain top where the pressure is 61.7 kPa. What is the volume of the balloon when it is released?
V2= ?
V1=59.5 L
P1= 101.3 kPa
P2= 61.7 kPa
112 L to mL
112,000 mL
What formula is needed for the following problem:
A sample of SO2 gas has a volume of 1.16 L at a temperature of 23°C. At what temperature will the gas have a volume of 1.25 L?
T2= V2T1 / V1
If the volume of a container increases, what will happen to the quantity of the gas?
No change
The value of the ideal gas constant needed if pressure is in mm Hg is ____________.
62.36 L * mm Hg / K * mol.
1.58 mL to L using scientific notation!
1.58 x 10-3
Molar mass of Ga2(SO3)3
379.626 g/mol
In the combined gas law, what is the variable remaining constant?
Amount of Gas
ID the variables:
A gas takes up a volume of 17 L at standard pressure with a temperature of 350 K. What is the new volume is the pressure were raised to 2.5 atm and temperature lowered to 290K?
V1: 17 L
T1:350 K
P1: 1 atm
P2: 2.5 atm
T2: 290 K
V2: ?
Solve for the unknown variable:
P1 = ?
V1 = 10 mL
P2 = 100 kPa
V2 = 15 mL
150 kPa
A gas takes up a volume of 17 L at standard pressure with a temperature of 299 K. What is the new volume if the pressure were raised to 2.5 atm and temperature raised to 350 K?
Combined Gas Law