engineering chemistry MCQ #2178

What is the expression for Kp for the reaction CaCO3(s) ⇌ CaO(s) + CO2(g)?

engineering chemistry MCQ #2178

  1. Question 1

    Q1. What is the expression for Kp for the reaction CaCO3(s) ⇌ CaO(s) + CO2(g)?

    • A) P(CO2)
    • B) P(CaO)P(CO2) / P(CaCO3)
    • C) P(CaCO3) / P(CaO)P(CO2)
    • D) 1 / P(CO2)

    Answer: P(CO2)

    Explanation: For heterogeneous equilibria, concentrations of solids are not included in the equilibrium expression, so Kp = P(CO2).