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A mixture of Nitrogen and Hydrogen (1:3 ...

A mixture of Nitrogen and Hydrogen (1:3 mole ratio) is at an initial pressure of 200atm. If 20% of the mixture reacts by the time equilibrium is reached, the equilibrium pressure of the mixture is

A

Data insufficient

B

180 atm

C

170 atm

D

160 atm

Text Solution

Verified by Experts

The correct Answer is:
B
`N_(2(g))=3H_(2(g)) harr 2NH_(3(g))`
from stoichiometry 4 mole reactants reacted to give 2 moles of `NH_(3)` 20% of 200 atm = 40 atm reacted to give 20 atm of products (`:. P prop n`)
Pressure of reactants left = 200 - 40 = 160 atm
Total pressure at equlibrium = 160+20=180atm
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