Question

Please answer.....Q.1. H2 and N2 gas was heated in a closed vessel of capacity 1L till equilibrium is established.. When the concentration of H2 and N2 are 10mol each,, equilibrium 2mols NH3 was formed.. calculate equilibrium constant for the reaction???

Answer 1

N2 + 3H2 ----> 2NH3

Initial moles 2 2 0

Equilibrium moles 2-\alpha 2-3\alpha 2\alpha

Since 0.5 mole of N2 has been used up therefore :

\alpha= 0.5 mole

Moles of NH3 = 1

Concentration of NH3 = moles/volume = 1/5 mol/l