Question

19. To treat indigestion, people take an antacid tablet. If you tested the pH of an antacid tablet, what range would you expect the pH to be?

20. The Hydrochloric acid (HCI) that you tested was a strong acid. What would you expect to happen to the pH of the solution if you reacted a base with the Hydrochloric acid and then tested the solution again?

Answer 1

Answer: 19. Antacids are less acidic than a neutral (water) so they are considered a base. Therefore they will be a larger number than water (7) so you would expect an antacid to be anywhere from 8-14. (Antacids are a 10)

20. Hydrochloric Acid is a very acidic substance so if you add a base to it the 2 combined together makes a less strong substance bringing its pH higher up the scale.

Explanation: For reference look at the pH scale, the lower the number the higher the acidity.