At elevated temperatures,dinitrogen pentoxide decomposes to nitrogen dioxide and oxygen: 2N₂O₅(g) → 4NO₂(g) + O₂ (g)
When the rate of formation of NO₂ is 5.5 × 10^-4 M/s,the rate of decomposition of N₂O₅ is ________ M/s.

Question

Quizplus · Accepted Answer

The stoichiometry of the reaction shows that 2 moles of N2O5 decompose to form 4 moles of NO2. Therefore, the rate of decomposition of N2O5 is half the rate of formation of NO2. Thus, the rate is (5.5 × 10^-4 M/s) / 2 = 2.75 × 10^-4 M/s, which is approximately 2.8 × 10^-4 M/s.

At Elevated Temperatures,dinitrogen Pentoxide Decomposes to Nitrogen Dioxide and Oxygen