kinetic theory worksheet
Kinetic Theory - Worksheet
1. State three (3) assumptions of the kinetic theory as it relates to gases.
[3]
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2. The kinetic theory assumes that all gases are ideal, however, this does not exist in reality.
a. State the conditions under which gases deviate from ideal behaviour and explain why the deviations occur.
[4]
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b. Sketch a graph of PV versus P showing the curves for an ideal gas and carbon dioxide on the same axis.
[2]
3. a. Use the ideal gas equation to calculate the number of moles of a gas which occupies a volume of 0.072dm3 at -480C and 3.4atm. R = 8.31JK-1mol-1
[5]
b. If the mass of the gas above is 0.94g, calculate its relative molecular mass.
[1]
Kinetic Theory - Worksheet
4. A gas sample in the laboratory has a volume of 45.9 dm3 at 25.0oC and a pressure of
743Pa. If the temperature is increased to 155oC by compressing the gas to a new volume of 31.0dm3 what is the pressure in atm?
5. There are 135dm3 of gas in a container at a temperature of 26000C. If the gas was cooled until the volume decreased to 75dm3, what would the temperature of the gas be?
6. A balloon is filled with 35.0dm3 of helium in the morning when the temperature is
20.000C. By noon the temperature has risen to 45.000C. What is the new volume of the balloon? 7. CaCO3 decomposes at 120000C to form CO2 gas and CaO. If 25dm3 of CO2 are collected at 120000C, what will the volume of this gas be after it cools to 2500C?
8. 6.0dm3 of gas in a piston at a pressure of 1.0 atm are compressed until the volume
1. State three (3) assumptions of the kinetic theory as it relates to gases.
[3]
________________________________________________________________________
________________________________________________________________________
________________________________________________________________________
2. The kinetic theory assumes that all gases are ideal, however, this does not exist in reality.
a. State the conditions under which gases deviate from ideal behaviour and explain why the deviations occur.
[4]
__________________________________________________________________
__________________________________________________________________
__________________________________________________________________
__________________________________________________________________
b. Sketch a graph of PV versus P showing the curves for an ideal gas and carbon dioxide on the same axis.
[2]
3. a. Use the ideal gas equation to calculate the number of moles of a gas which occupies a volume of 0.072dm3 at -480C and 3.4atm. R = 8.31JK-1mol-1
[5]
b. If the mass of the gas above is 0.94g, calculate its relative molecular mass.
[1]
Kinetic Theory - Worksheet
4. A gas sample in the laboratory has a volume of 45.9 dm3 at 25.0oC and a pressure of
743Pa. If the temperature is increased to 155oC by compressing the gas to a new volume of 31.0dm3 what is the pressure in atm?
5. There are 135dm3 of gas in a container at a temperature of 26000C. If the gas was cooled until the volume decreased to 75dm3, what would the temperature of the gas be?
6. A balloon is filled with 35.0dm3 of helium in the morning when the temperature is
20.000C. By noon the temperature has risen to 45.000C. What is the new volume of the balloon? 7. CaCO3 decomposes at 120000C to form CO2 gas and CaO. If 25dm3 of CO2 are collected at 120000C, what will the volume of this gas be after it cools to 2500C?
8. 6.0dm3 of gas in a piston at a pressure of 1.0 atm are compressed until the volume