Question

How ammonia is prepared for the synthesis of urea?

Answer 1

Answer. It is prepared by the Harber's process. One volume of nitrogen (from air) and three volumes of hydrogen (obtained by passing methane and steam over nickel catalyst) are passed over iron catalyst at 450 °C and 200 atm pressure
       N2(g)+ 3H2(g) ———> 2NH3(g)

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