Answer:
1. Partial pressure of H₂ = 2 atm
2. Partial pressure of He = 2 atm
Step-by-step explanation:
The following data were obtained from the question:
Mole of H₂ = 3.50 moles
Mole of He = 3.50 moles
Total pressure (Pₜ) = 4 atm
Partial pressure of H₂ =?
Partial pressure of He =?
Next, we shall determine the mole fraction of each gas this can be obtained as follow:
Mole of H₂ = 3.50 moles
Mole of He = 3.50 moles
Total mole = Mole of H₂ + Mole of He
Total mole = 3.50 + 3.50
Total mole = 7 moles
Mole fraction of H₂ = mole of H₂ / Total mole
Mole fraction of H₂ = 3.5/7
Mole fraction of H₂ = 0.5
Mole fraction of He = mole of He / Total mole
Mole fraction of He = 3.5/7
Mole fraction of He = 0.5
1. Determination of the partial pressure of H₂.
Mole fraction of H₂ = 0.5
Total pressure (Pₜ) = 4 atm
Partial pressure of H₂ =?
Partial pressure of H₂ = Mole fraction of H₂ × Pₜ
Partial pressure of H₂ = 0.5 × 4
Partial pressure of H₂ = 2 atm
2. Determination of the partial pressure of He.
Total pressure (Pₜ) = 4 atm
Partial pressure of H₂ = 2 atm
Partial pressure of He =?
Total pressure (Pₜ) = Partial pressure of H₂ + Partial pressure of He
4 = 2 + Partial pressure of He
Collect like terms
Partial pressure of He = 4 – 2
Partial pressure of He = 2 atm