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Rate equations (A-level only)

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Question 6

Nitric oxide (NO\text{NO}NO) reacts with oxygen in the atmosphere to form nitrogen dioxide, a key step in the formation of photochemical smog. The rate equation for this termolecular-like process is:

Rate=k[NO]2[O2] \text{Rate} = k[\text{NO}]^2[\text{O}_2] Rate=k[NO]2[O2​]

What are the units of the rate constant, kkk, for this reaction?

mol−1 dm3 s−1\text{mol}^{-1}\text{ dm}^3\text{ s}^{-1}mol−1 dm3 s−1

mol−2 dm6 s−1\text{mol}^{-2}\text{ dm}^6\text{ s}^{-1}mol−2 dm6 s−1

mol−2 dm3 s−1\text{mol}^{-2}\text{ dm}^3\text{ s}^{-1}mol−2 dm3 s−1

mol2 dm−6 s−1\text{mol}^2\text{ dm}^{-6}\text{ s}^{-1}mol2 dm−6 s−1

Rate equations (A-level only) Questions

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