Q. 65.0( 1 Vote )

N2(g) + 3H2(g) 2NH3(g) + heat

a) In this reaction what happens to the volume when the reactants change to the products?

b) What change in pressure is required for the maximum yield of the product?

c) What is the change in the concentration required for increasing the rate of the forward reaction?

d) What is the catalyst used in this reaction? What is its effect?

Answer :

a) When reactants change to the products then the volume decreases because 4-mole reactant molecules are converted into 2-mole product molecules.

b) Increase the pressure for maximum yield of the product. According to Le Chatelier principle, On increasing the pressure the reaction will proceed in a forward direction to attain equilibrium by reducing pressure. To reduce the pressure, reaction decreases reactant molecules. So the reactant molecules will react and form product very easily. Hence product formation will increase.


c) Increase the reactant concentration for increasing the rate of the forward reaction because on increase the reactant concentration the reaction will proceed in a forward direction to attain equilibrium by decreasing reactant molecules.


d) Iron is used as a catalyst in this reaction. A catalyst increases the rate of reaction.


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