Ever wonder whether your coffee is acidic or not? How about your tap water? We’re testing the pH of 10 Common Household Liquids using a digital pH meter.
Socratica sends a big thank you to Rozway for sending us their digital pH meter to use in this video!
You can buy your very own Rozway pH meter from Amazon and test everything in your house like we did! Here’s a link:
We would also like to thank our generous Patreon Sponsor, Tracy Karin Prell, for her kind donation that helped us make this video!! Tracy, you have been such a positive influence on us! We’re so glad you are on the Socratica Team!
Our first pH video is here:
Pure water is neutral, with a pH of 7, but most other water-based solutions are either acidic or basic. Some people are afraid of the word “acid,” thinking it means they are going to get burned. But the words “acid” and “base” merely tell you the direction a solution is moving away from neutral.
Acids increase the concentration of H+ ions in a solution.
Bases decrease the concentration of H+ ions in a solution.
If you’re concerned about safety, what you really want to know is the pH.
The pH scale runs from 0 to 14.
Acids have a pH less than 7.
Bases have a pH greater than 7.
The 10 Liquids we are testing today are:
Sriracha (hot sauce)
Now that you know the pH, can you calculate the H+ concentration? Post your answers in the comments!
We’d also like to hear if there are other common liquids you’d like us to test. If we get enough requests, we’ll make another video!
What to Watch Next:
Stoichiometry part 1
Stoichiometry part 2:
What is a Mole? Avogadro’s Number:
Unit Conversion 1:
Unit Conversion 2:
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We recommend the following books:
Brown and LeMay Chemistry: The Central Science
McGraw/Hill Chemistry by Chang & Goldsby
Uncle Tungsten: Memories of a Chemical Boyhood by Oliver Sacks
Napoleon’s Buttons: How 17 Molecules Changed History
Written and Produced by Kimberly Hatch Harrison
About our instructor:
Kimberly Hatch Harrison received degrees in Biology and English Literature from Caltech before working in pharmaceuticals research, developing drugs for autoimmune disorders. She then continued her studies in Molecular Biology (focusing on Immunology and Neurobiology) at Princeton University, where she began teaching as a graduate student. Her success in teaching convinced her to leave the glamorous world of biology research and turn to teaching full-time. Kimberly taught AP Biology and Chemistry at an exclusive prep school for eight years. She is now the head writer and producer of Socratica Studios.
Products in this video:
Rozway Digital pH Meter + x6 FREE pH Buffer Powder Pack | BONUS KIT | Pocket Size Accurate pH Scale 0-14 Water Quality Test Aquarium Pool Soil pH Test Kit No pH Strips Premium Hydroponic Supplies Kit –