Question

I'm trying to under stand the Haber process and this equilibrium reaction N2 +3H2 -----> 2NH3 + energy. In order to increase the yields of ammonia

1. remove amonia as it is formed

2. add an inhibitor

3. heat the reaction vessel

4. decrease the pressure in the reaction vessel.

Answer 1

Solution :-

Reaction equation is as follows

N2 +3H2 -----> 2NH3 + energy.

From the reaction equation it is concluded that the reaction is exothermic that means the energy is given out during the reaction.

1. remove amonia as it is formed = Removal of the ammonia means the removal of the product which shifts the equilibrium to product side therefore more ammonia will be produced. Hence it will increase the yield of ammonia

2. add an inhibitor = Inhibitors decrease the reaction rate therefore it will not increase the yield of ammonia

3. heat the reaction vessel = Since reaction is exothermic therefore heating the reaction vessel will decrease the yield of ammonia

4. decrease the pressure in the reaction vessel.= Decreasing pressure will also lead to the decrease in the yield of the ammonia because there are less moles of the product than moles of the reactant gas.

So the correct answer is the remocal of the ammonia will increase the yield of the ammonia.