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At 280 ºC, nitrogen dioxide decomposes to nitric oxide and oxygen: 2 NO2(g) → 2 NO(g) + O2(g) In oneKinetics Chemistry Question

Question

At 280 ºC, nitrogen dioxide decomposes to nitric oxide and oxygen:
2 NO2(g) → 2 NO(g) + O2(g)
In one experiment, the concentration of NO2 decreased from 0.0100 M to 0.0050 M over the course of 100. s. What was the average rate of disappearance of NO2(g)?

A.

1.0 × 10–2 M s–1

B.

1.0 × 10–4 M s–1

C.

5.0 × 10–5 M s–1

✓ Correct
D.

2.5 × 10–5 M s–1

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