Day 38 Podia Question

Podia Question

Platinum metal is a heterogeneous catalyst for this reaction:

2 NO(g) → N2(g) + O2(g)

The reaction rate varies with concentration of NO as shown in the graph.

Explain each of these observations. Include in your explanation an atomic-level description of NO molecules, the platinum surface, and how the two interact.

  • The graph is linear with positive slope at low concentrations of NO.
  • The graph is horizontal at high concentrations of NO.

Suggest an experiment that could be done to support or contradict your explanation of the horizontal graph. Describe the hypothesis you propose for what will happen in the experiment if your explanation is correct; also describe what experimental results would contradict your hypothesis.

Two days before the next whole-class session, this Podia question will become live on Podia, where you can submit your answer.

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Chemistry 109 Fall 2021 by John Moore, Jia Zhou, and Etienne Garand is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International License, except where otherwise noted.