1
Q
What factors does the molar volume of gases depend on?
A
- Temperature
- Pressure
- Number of particles of gas
This means: If temperature and pressure remain the same, equal volumes of different gases contain equal numbers of molecules.
2
Q
What is Avogadro’s law?
A
1 mole of any gas at room temperature and atmospheric pressure occupies a volume of 24 dm³ (molar volume of a gas).
3
Q
What is Avogadro’s constant?
A
6.02x10²³ molecules
4
Q
How do we calculate the mass of a gas?
A
Mass of gas (g) = relative formula mass (Mᵣ) x amount of gas (mol)
5
Q
How do we calculate the volume of a gas?
A
Volume of gas (dm³) = molar volume x amount of gas (mol)
6
Q
How can we find the volume of a gas experimentally?
A
Check teacher notes SC14(e) slide 72-73.
