Answer: The total pressure in the flask is 8.0 atm
Explanation:
We are given:
Initial partial pressure of nitrogen gas = 6.0 atm
Initial partial pressure of hydrogen gas = 6.0 atm
The chemical equation for the reaction of nitrogen and hydrogen gas follows:
[tex]N_2+3H_2\rightarrow 2NH_3[/tex]
By Stoichiometry of the reaction:
3 atm of hydrogen gas reacts with 1 atm of nitrogen gas
So, 6.0 atm of hydrogen gas will react with = [tex]\frac{1}[3}\times 6=2atm[/tex] of nitrogen gas
As, given amount of nitrogen gas is more than the required amount. So, it is considered as an excess reagent.
Thus, hydrogen gas is considered as a limiting reagent because it limits the formation of product.
Pressure of nitrogen gas left = [6 - 2] = 4.0 atm
By Stoichiometry of the reaction:
3 atm of hydrogen gas produces 2 atm of ammonia gas
So, 6.0 atm of hydrogen gas will produce = [tex]\frac{2}{3}\times 6=4atm[/tex] of ammonia
Total pressure in the flask = [4 + 4] = 8.0 atm
Hence, the total pressure in the flask is 8.0 atm
