38: Gas Volume Calculations

Question 1

What is Avogadro’s Law in terms of number of gas molecules?

Answer 1

Equal volumes of gases measured at the same temperature and pressure, contain the same number of molecules.

Question 2

What is Avogadro’s Law in terms of number of mole of gases?

Answer 2

Equal volumes of gases measured at the same temperature and pressure, contain the same number of mole of gases.

Question 3

What is molar volume?

Answer 3

Molar volume is the volume occupied by one mole of gas.

Question 4

What is the molar volume of gases at room temperature and pressure?

Answer 4

24.0 dm³ mol ^-1 or 24 000 cm³ mol ^-1

Question 5

How can the volume of gas be expressed in terms of molar volume?

Answer 5

Volume of gas = number of moles of gas x molar volume (at the required temperature and pressure)

Question 6

How can the number of mole of gas be expressed in terms of molar volume?

Answer 6

Number of mole of gas = volume of gas / molar volume (at the required temperature and pressure)