Answer:
p (H₂S) = 2.07 atm
p (CO₂) = 1.38 atm
p (N₂) = 42.55 atm
Explanation:
We can solve this question by remembering that the partial pressure of a gas is given by the product of its mole fraction times the total pressure.
In this question we have the total pressure, and the concentration in mol percent and it will be easy to compute the mol fraction, X, by:
1 . Assume one hundred total mol of gas
2. X (A) = number of mol of A/total number of moles
So,
X (H₂S) = 4.5 mol / 100 mol = 0.045
and similarly for the rest of the gases:
X (CO₂) = 0.03
X (N₂) = 100 - ( 0.045 + 0.03) = 0.925
The partial pressures finally are:
p (H₂S) = 0.045 x 46 atm = 2.07 atm
p (CO₂) = 0.03 x 46 atm = 1.38 atm
p(N₂) = 0.925 x 46 atm = 42.55 atm
