MDCAT Chemistry MCQ #2228

A student compares the effect of heating on the Haber process (exothermic) and the formation of NO (endothermic). The equilibrium constant Kc behaves differently because:

MDCAT Chemistry MCQ #2228

  1. Question 1

    Q1. A student compares the effect of heating on the Haber process (exothermic) and the formation of NO (endothermic). The equilibrium constant Kc behaves differently because:

    • A) Kc increases for both types of reactions
    • B) Kc decreases for both types of reactions
    • C) Kc remains constant regardless of temperature
    • D) Kc decreases for exothermic and increases for endothermic reactions

    Answer: Kc decreases for exothermic and increases for endothermic reactions

    Explanation: For exothermic reactions, increasing temperature decreases Kc; for endothermic reactions, Kc increases with temperature, showing opposite thermodynamic dependencies.