Equilibrium — Le Chatelier predictions
VCE Chemistry · Equilibrium & Le Chatelier · 6 flashcards, free to study.
Quick-fire Kc, predictions for stress changes, common SAC trap (catalyst doesn't shift!).
- What does Kc represent?
- Ratio of product to reactant concentrations at equilibrium, each raised to its stoichiometric coefficient.
- Effect of adding catalyst on equilibrium position
- None — equilibrium reached faster but Kc and concentrations unchanged.
- Effect of ↑ temperature on an exothermic reaction
- Equilibrium shifts ← (toward reactants); Kc decreases.
- Effect of ↑ pressure on N₂(g) + 3H₂(g) ⇌ 2NH₃(g)
- Shifts → (fewer moles of gas).
- What's a homogeneous equilibrium?
- All species are in the same phase (e.g. all aqueous, or all gas).
- Why does adding an inert gas at constant volume not shift equilibrium?
- Partial pressures of reactants and products are unchanged.