Add a small pinch of crushed calcium carbonate to each of

Last updated: 7/24/2022

Add a small pinch of crushed calcium carbonate to each of two test tubes. Put about 2 mL (2 squirts) of 1 M acetic acid, HC₂H3O2, into each test tube. Set one test tube in a beaker without stirring, and stir the other by tapping the side of the test tube to swirl its contents for one minute. Compare the rate of reaction in the two test tubes. Did one "dissolve" faster? Using two test tubes, add a very small pinch of yeast to only ONE. Add about 2 mL of hydrogen peroxide to each of the two test tubes. Compare the rate of bubbling due to the decomposition of the hydrogen peroxide. Yeast may catalyze this reaction.