Merged PH Indicator

pH Indicator

Emily S., Brianna B. , Trinity L.

Pictures

Materials Used

● Red Cabbage
● Filter Paper
● Baking Soda
● Household Ammonia
● Lemon Juice
● Vinegar
● Seltzer Water
● etc.

Process / Method

1. Chop cabbage into small pieces to get 2 cups. Place cabbage into glass
container and add boiling water to cover the cabbage. Allow the color to leach
out for at least 10 minutes.

2. Filter out plant material to obtain a red-purple-bluish colored liquid.The exact
color varies depending on the pH of the water being used.

3. Add 50-100 mL of the red cabbage indicator into different containers or
beakers.

4. Add various household solutions until any color change is seen.

Data

Materials Color Type of Solution pH
Muriatic Acid Red Acid 2
Sodium Hydroxide Greenish-Yellow Base 12
Seltzer Water Purple Acid 4
Distilled White Reddish-Pink Acid 3
Vinegar
Ammonia Greenish-Blue Base 10
Lemon Juice Reddish-Pink Acid 3
Sodium Carbonate Greenish-Blue Base 10
Baking Soda Blue Base 8
Antacid Tablets Violet Acid 6

pH Scale

1 2 2 3 4 5 6 7 8 9 10 11 12 13 14

Acidic Neutral Alkaline

Real World Acid and base concepts can be
Application used in many everyday scenarios.
For example when checking if a
How can the acid/base concepts swimming pool is over acidic, if not
utilized in this project used in checked there would be many
everyday life? effects such as the water may get
cloudy or the chlorine may not be
effective. Another example would
be soil testing in this instance it is
good plants to be either grown in
acidic soil or basic soil. These
examples help to emphasize how
acid and base concepts are utilized
in everyday life.

Particle Diagrams

H+ : Hydrogen
Cl- : Chlorine
F- : Fluorine
HF : Hydrofluoric Acid

Sources

https://www.thoughtco.com/making-red-cabbage-ph-indicator-603650
https://study.com/academy/lesson/acid-base-indicators-uses-examples.html
https://www.stevespanglerscience.com/lab/experiments/red-cabbage-chemistry/