Hello everyone
Today, we will conduct an experiment
Anyone can repeat this at home
We will make universal pH indicator from red cabbage
First, We would cut red cabbage into four parts
Again cut it into small chunks
You can also blend it using a blender
Add hot boiling water in a beaker with the cabbage
Then wait for about 15-20 minutes
Red cabbage contains natural dye
which is anthocyanin
Once the cabbage releases its dye
It should be filtered
Whenever you want to use this solution
Dilute it in water as shown here
Now I will pour it into several beakers to show its effect
1) Sulphuric Acid (H2SO4) pH = 1
2) Acetic Acid (COOH)
3) Sparkling/Soda Water (H2CO3) pH = 4
4) Water (H2O)
5) Baking soda solution (NaHCO3) pH = 8-9
6) Ammonia (NH3) pH = 12
7) Sodium Hydroxide (NaOH) pH = 14