A) increase of temperature and decrease of pressure
B) decrease of both the temperature and pressure
C) increase of both the temperature and pressure
D) decrease of temperature and increase of pressure
Correct Answer: D
Solution :
Consider the equilibrium\[{{N}_{2}}(g)+3{{H}_{2}}(g)2N{{H}_{3}}(g);\]\[\Delta H=-936.6\,\,kJ\] Here, formation of \[N{{H}_{3}}\] take place with evolution of heat and decrease in mole therefore, according to Le-Chateliefs principle; favourable condition for the formation of \[N{{H}_{3}}\] are Low temperature High pressure Excess of \[{{N}_{2}}\]and \[{{H}_{2}}\].
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