MDCAT Chemistry MCQ #2259

Consider the gas phase equilibrium: N2O4 (colorless) <=> 2NO2 (brown). What happens to the color intensity if the pressure of the system is increased?

MDCAT Chemistry MCQ #2259

  1. Question 1

    Q1. Consider the gas phase equilibrium: N2O4 (colorless) <=> 2NO2 (brown). What happens to the color intensity if the pressure of the system is increased?

    • A) The reaction shifts towards the right (NO2 side)
    • B) The reaction shifts towards the left (N2O4 side)
    • C) The concentration of NO2 remains unchanged
    • D) The value of Kc decreases significantly

    Answer: The reaction shifts towards the left (N2O4 side)

    Explanation: Increasing pressure shifts equilibrium to the side with fewer moles (N2O4). Option A is wrong because it favors the forward direction.