Chemistry - Chemical Equilibrium - Equilibrium constant (Kc and Kp) - Writing K Expressions

4 examples of Kc expressions. Example 1: 'N₂(g) + 3H₂(g) ⇌ 2NH₃(g). Kc = [NH₃]²/([N₂][H₂]³). Products over reactants, raised to their coefficients.' Example 2: '2SO₂(g) + O₂(g) ⇌ 2SO₃(g). Kc = [SO₃]²/([SO₂]²[O₂]).' Example 3: 'CaCO₃(s) ⇌ CaO(s) + CO₂(g). Kc = [CO₂]. Solids and pure liquids are EXCLU