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Le Ch â telier’s Principle

Le Ch â telier’s Principle. Shifts in Chemical Equilibrium. Le Ch â telier’s Principle. If stress is applied to a chemical system in equilibrium, the system will shift in a direction to relieve the stress. ______________________ ______________________ ______________________.

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Le Ch â telier’s Principle

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  1. Le Châtelier’s Principle Shifts in Chemical Equilibrium

  2. Le Châtelier’s Principle • If stress is applied to a chemical system in equilibrium, the system will shift in a direction to relieve the stress. ______________________ ______________________ ______________________

  3. Concentration Change aA + bB  cC + dD Keq = [C]c [D]d [A]a[B]b

  4. Concentration Change 2 SO2 + O2  2 SO3 Keq = [SO3]2 [SO2]2 [O2]

  5. System Pressure Change 2 SO2 + O2  2 SO3 Keq = [SO3]2 [SO2]2 [O2]

  6. Temperature Change N2 + 3H2 2NH3 + 46.19 kJ Keq = [NH3]2 [N2][H2]3

  7. Le Châtelier’s Principle Increase concentration of reactants- shift to favor products (Decrease concentration of reactants- shift to favor reactants) Increase concentration of products- shift to favor reactants (Decrease concentration of products- shift to favor products) Increase pressure of system- shift to side with fewer moles of gasses (Decrease pressure of system- shift to side with more moles of gasses) Increase Temperature- shift in endothermic direction (Decrease Temperature- shift in exothermic direction)

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