AIPMT PRELIMS 2006 Chemistry Le Chatelier's Principle MCQ Question
For the reaction, CH₄(g) + 2O₂(g) → CO₂(g) + 2H₂O(l), ΔH = -170.8 kJ mol⁻¹ Which of the following statements is not true?
At equilibrium, the concentrations of CO₂(g) and H₂O(l) are not equal
The equilibrium constant for the reaction is given by Kₚ = [CO₂]/[CH₄][O₂]
Addition of CH₄(g) or O₂(g) at equilibrium will cause a shift to the right
The reaction is exothermic
Correct Answer
Detailed Explanation
At equilibrium, the concentrations of products and reactants are constant, but not necessarily equal. The statement that they are not equal is true, making it the correct choice for 'not true'.
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