The Gas Phase: Ideal Gases (HY)

Question 1

Given the mass, V, P, T of an unknown gas at non-STP conditions, how can you determine the gas’ identity?

Answer 1

By identifying gas’ molar mass

1. Determine volume (V)of gas under STP by using (PV)/T=(1atm x V)/273K
2. STP density: mass/V* @ STP
3. M = STP density x 22.4L/mol

Question 2

What is the STP volume of one mole of any gas?

Answer 2

22.4L

Question 3

What is Avogadro’s Principle’

Answer 3

For a gas at constant temperature and pressure, as the number of moles of gas increases, the volume increases in direction proportion

Question 4

What is Boyle’s Law?

Answer 4

At constant temperature, Volume of gas is inversely proportional to pressure

Question 5

What’s Charles’ Law?

Answer 5

At constant pressure, as temperature increases in Kelvin, volume of the gas proportionally increases

Question 6

What is Gay-Lussac’s Law?

Answer 6

At constant volume, as temperature of a gas increases in Kelvin, pressure proportionally increases

Question 7

What is Henry’s law?

Answer 7

solubility of a gas in liquid (concentration) is proportional to partial pressure of gas