S

Shyam Dubey • 3.70K Points
Extraordinary

Q. Which statement best describes Le Chatelier's principle?

  • (A) A system at equilibrium will shift to counteract any imposed change in conditions.
  • (B) Equilibrium constants change when the concentration changes.
  • (C) Adding inert gas to a reaction mixture at constant volume shifts the equilibrium position.
  • (D) Temperature has no effect on equilibrium position.
  • Correct Answer - Option(A)
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Explanation by: Shyam Dubey
Le Chatelier's principle states that an equilibrium system responds to disturbances (changes in concentration, pressure, temperature) by shifting to oppose the change. Option 2 is false because the equilibrium constant K remains the same for a given temperature; only changing temperature changes K. Option 3 is generally false for constant volume — adding an inert gas at constant volume does not change partial pressures of reactants/products, so equilibrium doesn't shift. Option 4 is false because temperature changes do affect equilibrium constants and positions.

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