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in Compounds of Non-Metals by (37.7k points)
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The chemical equation of the industrial preparation of ammonia is given below. 

N2 + 3H2 ⇌ 2NH3 + Heat 

a. Temperature is to be decreased to get maximum yield of ammonia, according to the Le Chatelier principle. Why? 

b. What is the reason for taking an optimum temperature in this reaction?

1 Answer

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a. When the temperature decreases exothermic reaction increases ie. forward reaction increases. 

b. At low-temperature rate of forward and backward reaction is slow.

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