MDCAT Chemistry MCQ #2260

A reaction has an equilibrium constant Kc of 10^15. What can be inferred about the extent of this reaction at equilibrium?

MDCAT Chemistry MCQ #2260

  1. Question 1

    Q1. A reaction has an equilibrium constant Kc of 10^15. What can be inferred about the extent of this reaction at equilibrium?

    • A) The reaction hardly proceeds in the forward direction
    • B) The reactants and products are in equal concentrations
    • C) The reaction is at a very early stage of progress
    • D) The reaction is almost complete at equilibrium

    Answer: The reaction is almost complete at equilibrium

    Explanation: A large Kc (>10^3) indicates the reaction has almost gone to completion. Option A is for very small Kc.