For the production of ammonia...#N_2(g)+3H_2(g) rightleftharpoons2NH_3(g)#..what is true at equilibrium...?
#"(1) The concentration of ammonia is "2.0*mol*L^-1#
#"(2) The concentration of dinitrogen is constant."#
#"(3) The concentration of ammonia is variable."#
#"(4) The concentration of ammonia cannot be determined."#
Chemical equilibria are a kinetic phenomenon, in that equilibrium unequivocally specifies that the RATE of the FORWARD reaction is EQUAL to the RATE of the BACKWARD reaction.
AS chemists, we can formalize this statement symbolically,
By the way, this equation represents probably one of the most important reactions of the planet. Dinitrogen reduction is exceptionally difficult to do, and without it we would have no nitrogenous fertilizer.
Also by the way, this is an important result to get your head around. If you have any objections or questions, voice them here, and someone will help you.