engineering chemistry MCQ #2152

For the reaction 2NO2 ⇌ N2O4, if the degree of dissociation is α, what is the total number of moles at equilibrium?

engineering chemistry MCQ #2152

  1. Question 1

    Q1. For the reaction 2NO2 ⇌ N2O4, if the degree of dissociation is α, what is the total number of moles at equilibrium?

    • A) 1 + α
    • B) 1 - α
    • C) 1 + α/2
    • D) 1 - α/2

    Answer: 1 - α/2

    Explanation: Initially 1 mole of N2O4, at equilibrium (1-α) moles of N2O4 and 2α moles of NO2, total = 1 - α + 2α = 1 + α, but for 2NO2 ⇌ N2O4, it is 1 - α/2.