Enjoy up to 50% off! Code: PREVW Ends: 1/18 Details
  1. Help

Homemade pH Indicator Project

Hello, you either have JavaScript turned off or an old version of Adobe's Flash Player. Get the latest Flash player.

Homemade pH Indicator Project - Page Text Content

S: SUMMER 2012

BC: The End

FC: 2012 | Chemistry Honors | pH Indicator Project

1: Initially, when I searched for homemade pH indicators, all I could find was red cabbage. Upon further research (including asking other people what they were using), I decided upon red grape juice. Another choice I considered were beets. The red grape juice is an acid, ranging somewhere in 2-2.5 area on the pH scale. Most of the bases I tested changed colors, which is indicative of an acid indicator.

2: The First Trial: Grape juice from concentrate

3: Lime Juice | Minimal change if any; lime juice is an acid. This reaction was expected.

4: Bleach | The juice turned yellow-white when bleach was added; since bleach is a base, this reaction makes sense.

5: Human Saliva | The saliva made no change to the grape juice, however it is not acidic. Saliva is neutral.

6: Non-Aerosol Hairspray | The only significant change to the grape juice was an unusual white precipitate.

7: 1% Milk | The grape juice congealed with the milk. The milk instantly curdled. It was nasty.

8: PINK Body Lotion | No change to either substance. With the knowledge I have of acids and bases, I believe the lotion is a base.

9: Nail Polish Remover | No color change, which surprised me. I assumed polish remover was a base, although it could be a base not registered by the grape juice.

10: Olive Oil | The olive oil didn't react at all with the grape juice. It just floated on top of it, doing its own thing.

11: The dish detergent turned the juice an ugly black color; it was very, very basic. | d i s h d e t e r g e n t

12: Baking Soda | The juice turned purple-black when baking soda was added. Baking soda is also a strong base.

13: The Second Trail: Freshly squeezed grape juice

14: NOTE: I recorded only significant differences between my two trials.

15: BLEACH | The bleach in fresh juice formed a precipitate.

16: Hairspray | Like with the bleach, this formed a precipitate.

17: 1% Milk | The milk also formed a precipitate; it was nasty and I had to scrape it out of my glass for the next test.

18: Dish Detergent | The dish detergent was initially bright red, but changed back to yellow before I could snap the picture.

19: Baking Soda | B U B B L E S

Sizes: mini|medium|large|gigantic
Default User
  • By: Brady H.
  • Joined: over 4 years ago
  • Published Mixbooks: 1
No contributors

About This Mixbook

  • Title: Homemade pH Indicator Project
  • 10 mod Honors Chem Final
  • Tags: None
  • Published: over 4 years ago

Get up to 50% off
Your first order

Get up to 50% off
Your first order