In the manufacture of ammonia, why is a pressure of 150-300 atm used?

In manufacturing of ammonia, What if the pressure of the system is decreased?

Ammonium chloride is used in the laboratory for the manufacture of ammonia : Which substance is used to remove the water content in ammonia. Which property is utilized here?

Ammonium chloride is used in the laboratory for the manufacture of ammonia : Which chemical is reacted with ammonium chloride to produce ammonia?

In the manufacture of ammonia, the reaction in which direction result in the decrease in the number of molecules?

Write some uses of ammonia.

Ammonium chloride is used in the laboratory for the manufacture of ammonia : Write the equation for the reaction.

At 90^@C , the vapour pressure of toluene is 400 mm and that of xylene is 150 mm. The mole fraction of toluene in liquid mixture that boil at 90^@C at a pressure of 0.5 atm is

Discovery, of Haber’s process for manufacture of ammonia is considered to be one of the principal discoveries of twentieth century. What is the temperature condition for maximum yield of ammonia? Justify.