Question Detail

CHM 101 CHM 101 Past Questions Objective Question

Question

For the reaction 2N₂O₅(g) → 4NO₂(g) + O₂(g), the rate of disappearance of N₂O₅ is 2.4 × 10⁻³ M/s. What is the rate of appearance of NO₂?
Options
A 1.2 × 10⁻³ M/s
B 2.4 × 10⁻³ M/s
C 4.8 × 10⁻³ M/s
Correct Answer
D 9.6 × 10⁻³ M/s
Correct Answer

Option C is the correct answer.

Detailed Explanation

From the stoichiometry, 2 mol N₂O₅ produce 4 mol NO₂. The rate of appearance of NO₂ is twice the rate of disappearance of N₂O₅: 2 × (2.4 × 10⁻³) = 4.8 × 10⁻³ M/s.

Hint

Use the stoichiometric coefficients to relate the rates of different species.

Question Info