Lesson plan

OPA mixture

OPA is a mixture of isopropyl alcohol and isopropylamine (72:28) that is used in the production of the sarin nerve agent. The mixture reacts with methylphosphonyl difluoride to produce sarin.

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Article summary

OPA is a mixture of isopropyl alcohol and isopropylamine (72:28) that is used in the production of the sarin nerve agent. The mixture reacts with methylphosphonyl difluoride to produce sarin.

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Discussion questions

  1. Summarise the article in your own words. Which single claim would you verify first, and why?
  2. Which claim in this article is most likely to be revised as the sources update? How would you check its current status?
  3. If two sources disagreed about one of these facts, what would you need in order to trust one over the other?

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