Gas Laws Worksheet Using Peas and Vegetables on the Table
 STP= Standard Temperature and Pressure (101.325kPa or 1 atm
and 273K or 0C)
 Collection of gases over water…must correct for pressure of water
Pgas= PTotal– PH2O
1. A quantity of gas is collected over water at 8.50º C in a 353cm3
vessel. The pressure is 84.35k Pa. What volume would the dry gas
occupy at STP? PH2O=1.1kPa
2. A gas collected over water occupies a volume of 596cm3 at 43º C. The
pressure is 101.1kPa. What volume will the dry gas occupy at STP?
PH2O= 1.1kPa
3. A gas collected over water has the following sets of conditions. Find the
volume of the dry gas at STP in each case.
a) 888cm3 at 14º C, and 93.3kPa. PH2O=1.6kPa
b) 30.0cm3 at 16º C, and 77.5kPa. PH2O=1.8kPa
c) 34.0cm3 at 18º C, and 82.4kPa. PH2O=2.1kPa
d) 384cm3 at 12º C, and 78.3kPa. PH2O=1.4kPa
e) 8.23cm3 at 27º C, and 87.3kPa. PH2O=3.6kPa
PV=nRT
1mol=22.4L at STP
1. What pressure is exerted by 4.50 moles of gas in a 198dm3 container at
8.75º C?
2. What volume would be occupied by 3.22 moles of gas at a temperature of
35.0º C and 93.2kPa?
3. How many moles of gas can be contained in a 1.44L flask at 32.0 ºC and
93.5kPa?
4. What temperature (in ºC) is a gas if 2.31mol of it will occupy 61.0L at a
pressure of 94.6kPa?
5. What pressure is exerted by 0.622mol of gas contained in a 8.22L vessel
at 16.0ºC?