Activity 3.7:
Calculating the number of moles and volume of gases
[Molar volume of gas = 22.4 dm3 mol–1 at STP or 24 dm3 mol–1 at room conditions]
1. Calculate the volume of 0.6 mol of chlorine gas, Cl2 at STP and room conditions.
2. Calculate the number of moles of each of the following gases:
(a) 48 cm3 of argon gas, Ar at room conditions (b) 39.2 dm3 of carbon dioxide gas, CO2 at STP
3. A sample contains 0.2 mol of methane gas, CH4 and 0.3 mol of ethane gas, C2H6. What is the volume of the sample at room conditions?
Answer:
1. 13.44 dm3 at STP; 14.4 dm3 at room conditions
2. (a) 0.002 mol
(b) 1.75 mol
3. 12 dm3
Calculating the number of moles and volume of gases
[Molar volume of gas = 22.4 dm3 mol–1 at STP or 24 dm3 mol–1 at room conditions]
1. Calculate the volume of 0.6 mol of chlorine gas, Cl2 at STP and room conditions.
2. Calculate the number of moles of each of the following gases:
(a) 48 cm3 of argon gas, Ar at room conditions (b) 39.2 dm3 of carbon dioxide gas, CO2 at STP
3. A sample contains 0.2 mol of methane gas, CH4 and 0.3 mol of ethane gas, C2H6. What is the volume of the sample at room conditions?
Answer:
1. 13.44 dm3 at STP; 14.4 dm3 at room conditions
2. (a) 0.002 mol
(b) 1.75 mol
3. 12 dm3