Question

In the formation of ammonia we write the chemical equation is NITROGEN COMBINE WITH HYDROGEN TO FORM AMMONIA ,
NITROGEN + HYDROGEN - AMMONIA After writing the nitrogen and hydrogen we put reversable sign what that sign mean is it a chemical or physical change?

Answer 1

The reversible sign represent the reaction exist in chemical equilibrium. In chemical equilibrium rate of forward reaction = rate of backward reaction.
N₂ + 3 H₂ <-----> 2 NH₃