Chemical Equilibria, at a glance

Dynamic equilibrium means equal forward and reverse rates. A concentration or pressure disturbance can change composition while K stays fixed. Only temperature changes K for the same written reaction; a catalyst speeds approach without changing the endpoint.

Write K from the balanced equation, use equilibrium values and respect phases. Build an amount-change table before converting to concentrations or partial pressures. For Haber, explain yield, rate, compression cost and recycling as distinct considerations.