An initial mixture of nitrogen gas and hydrogen gas is reacted in a rigid container at a certain temperature by the reaction

3H2(g) +N2(g) <=> 2NH3(g)

At equilibrium the concentrations are [H2]=5.0 M, [N2]= 8.0M, [NH3]=3.0M

What were the concentrations of nitrogen gas and hydrogen gas that were reacted initially.

Concentrations of nitrogen gas and hydrogen gas that were reacted initially were 6.5 M and 0.5 respectively

Explanation:

Equilibrium constant is the ratio of the concentration of products to the concentration of reactants each term raised to its stochiometric coefficients.

at t= 0       x      y              0

tt t= eqm    (x-3z)   (y-z)      2z

2z = 3.0 M

z= 1.5 M

Initial concentration of =

Initial concentration of =

Thus concentrations of nitrogen gas and hydrogen gas that were reacted initially were 6.5 M and 0.5 respectively

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hope it ,

bioteacher101