1. The problem statement, all variables and given/known data This is not a homework question, rather, I am just trying to clarify a concept and example in my textbook. Ammonia is produced by the reaction of Nitrogen (N2) with hydrogen (H2) as shown in this equation. N2 + 3 H2 --> 2 NH3 The rate of ammonia production is 5.0 x 10-6 mol/(L * s) What is the general reaction rate? What are the corresponding rates for nitrogen and hydrogen transformation? 2. The attempt at a solution Calculation: = (1/2) ( 5.0 x 10-6 mol/(L * s) ) = 2.5 x 10-6 mol/(L * s) My question is: aren't they already giving us a rate when they say that "The rate of ammonia production is 5.0 x 10-6 mol/(L * s)" ... so why is it necessary to use the general reaction rate law to figure out the "rate". Isn't the rate already given. I'm kind of confused about this.