Ah, saiba, they tell us to leave solids and pure liquids out of the equilibrium expression. I taught that for years, writing Kc = [products]/[reactants] and carefully omitting them, like scratching out a mistake. But I only understood the 'why' much later—their concentrations don't change, they are constant, so they get absorbed into the equilibrium constant itself. It reminds me of how I used to just pay the electricity bill on time, a rule I followed, without truly understanding the wiring in this old house until a switch sparked. We often memorize the repair without seeing the whole faulty circuit.
#exams#study
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