C4.9 Volume of Gas Flashcards
1
Q
What is the volume of 1 mole of any gas at room temperature?
A
➢ 24dm^3 ( 24000 cm^3)
2
Q
What is room temperature defined as?
A
➢20 degrees and 1 atmosphere
3
Q
What is the equation for the number of moles of gas?
A
➢ Volume of gas (dm^3)/24 dm^3
4
Q
One make of car has an air- bag that is inflated by 70.0g of nitrogen, N2 when activated. What volume would the nitrogen gas occupy at room temperature?
A
➢ Find moles of nitrogen by mass / relative formula mass
➢ 70/14x2 = 2.5mol
➢ Then use the number of moles in a gas formula
➢ 2.5 = volume of gas / 24
➢ Volume of gas = 60dm^3
5
Q
How can you calculate volume of gaseous reactants?
A
➢ Using the molar gas volume and balanced symbol equations
