Question

Ammonia gas is formed by the combination of nitrogen and hydrogen.
$N_2+3H_2\to 2N{H}_3$

In the above equation: (This question has multiple correct options)
(a)- Nitrogen and hydrogen are solvents
(b)- One molecule of nitrogen combines with 3 molecules of hydrogen and forms two molecules of ammonia
(c)- One volume of nitrogen and three-volume of hydrogen combine and give two volumes of ammonia gas
(d)- Reactants and products are not in gases.

Answer 1

Hint: Haber’s process is the commercial process which is used for the production of ammonia. This principle works on Le Chatlier’s principle. One molecule of gas is equal to one volume of gas. The promoter used in this process belongs to group 6 of the d-block and fifth period.

Complete step by step answer:
Haber’s process is the commercial process which is used for the production of ammonia.
The reaction involved in this process is given below:
$N_2(g)+3H_2(g)\rightleftharpoons 2N{H}_3(g);{\mathrm{\Delta }}_f{H}^{\circ }=-92.4\text{ kJ mo}{\text{l}}^{-1}$

From the equation above we can see that all the compounds involved are in a gaseous state. This equation states that one molecule of nitrogen reacts with three molecules of hydrogen to give two molecules of ammonia. One molecule of gas is equal to one volume of gas so this statement can be written in the volume form also as one volume of nitrogen reacts with three volumes of hydrogen will give two volumes of ammonia.
Some properties and requirements of this reaction are exothermic, reversible, low temperature, high pressure, and catalyst with the promoter. The catalyst used is iron with molybdenum as a promoter.
So, the correct answer is “Option A,B and C”.

Note: Low temperature: Since this reaction is exothermic, low temperatures will favor the formation of ammonia. High pressure: As the forward reaction occurs with a decrease with volume, high pressure will favor the formation of ammonia. Ammonia gas is colorless and has a pungent smell called the ammoniacal smell, it causes tears in the eyes. It has very solubility in water and is lighter than air.