Experiment #3 Testing the action of antacids Antacids as the name suggests, help get rid of extra acid. This acid is HCl

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Experiment 3 Testing The Action Of Antacids Antacids As The Name Suggests Help Get Rid Of Extra Acid This Acid Is Hcl 1 (73.1 KiB) Viewed 197 times

Experiment #3 Testing the action of antacids Antacids as the name suggests, help get rid of extra acid. This acid is HCl and it is secreted by stomach glands in order to help create a functional enzyme called pepsin, Pepsin is an enzyme that digests proteins. When a person eats, he or she releases HCI and pepsinogen. The HCI cleaves the pepsinogen to form pepsin and the pepsin can then work on proteins to digest them. Sometimes, a person secretes too much acid in their stomach or some of the acid reaches up into the esophagus and the person experiences heartburn. This is not the heart burning, but the lining of the esophagus being irritated. The esophagus lies next to the heart at this anatomical point, so the person feels as if their heart is burning. To get rid of this burning, people take antacids such as Rolaids, Tums®, and Alka-Seltzer. Today, we will use the 0.1 M HCI solution and the solutions of the antacids to see which one works the best to neutralize the acid. In neutralizing the acid, the antacid must bind up the in the acid. This means the antacids are acting to bind up but they are not maintaining a pH in this situation. Here, we are titrating the antacid with acid in order to bring the acid content down to a neutral pH. Set up a test tube rack with 4 test tubes labeled A,B,C and D. TO test tube A, add 5mL of the Rolaids solution. To test tube B, add 5 mL of the Tums® solution, to test tube C, add 5 mL of the Alka-Seltzer solution, and to tube D, add 5 mL of water. Now, add 2 drops of Universal pH indicator to each tube. Also use the pH paper to take the pH of each solution. Record your data in the table below: Solution : Final Initial Initial color with indicator pH. Number of drops of Final color 0.1M HCI added pH A RolaidsⓇ B Tums®. C Alka- Seltzer® D H₂O Now, take test tube A and start adding 0.1M HCl, drop by drop. Mix after each drop is added. Add until the color changes to green. Record the color and take the pH with pH paper and record this above. Repeat for tubes B, C, and D. Answer the following questions: or solution, while one 1. A solution with a pH of 9 is a with a pH of 4 is a solution. 2. In part 3, what did the antacids do and why?