Two moles of ammonia is introduced in a evacuated500 mL vessel at high

1.	Two moles of ammonia is introduced in a evacuated500 mL vessel at high temperature. Thedecomposition reaction is:At the equilibrium NH becomes 1 mole then theK would be :-(1) 0.42(2) 6.75
Answer» You have given initial [NH3]. If [NH3] remaining = 1 mole/L, then 1mole/L reacted 2NH3(g) N2(g)+3H2(g) So change in concentration of NH3 = -1 mole/L. This means that because 2 mole NH3 make 1 mole of N2, the change in [N2] will +0.5mol/L and that for H2 will be +1.5mol/L. Equilibrium concentration of NH3 will be 1 mole/LPlug into Keq= [N2][H2}^3/[NH3]^2 and find Keq=(1.5^3)(0.5) = 1.687 nearly equal to 1.7

Two moles of ammonia is introduced in a evacuated500 mL vessel at high temperature. Thedecomposition reaction is:At the equilibrium NH becomes 1 mole then theK would be :-(1) 0.42(2) 6.75

Answer»

You have given initial [NH3]. If [NH3] remaining = 1 mole/L, then 1mole/L reacted 2NH3(g) N2(g)+3H2(g)

So change in concentration of NH3 = -1 mole/L.

This means that because 2 mole NH3 make 1 mole of N2, the change in [N2] will +0.5mol/L and that for H2 will be +1.5mol/L.

Equilibrium concentration of NH3 will be 1 mole/LPlug into Keq= [N2][H2}^3/[NH3]^2 and find Keq=(1.5^3)(0.5) = 1.687 nearly equal to 1.7