This chemistry video tutorial explains how to identify the intermediate and the catalyst in a reaction mechanism. It's important to understand that the intermediate and the catalyst do not show up in the overall reaction mechanism. The catalyst is present at the beginning and shows up at the end. It appears first on the left side and then reappears on the right side. The intermediate appears on the right side and then shows up on the left side later. The intermediate is produced first and then consumed later. This tutorial contains 2 example problems for you to learn this concept.

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