pH of Household Items
Matt Rand & Lauren Sullivan
If the concentration of H+ is added to an aqueous solution then the acid will increase.
If the concentration of OH- is added to an aqueous solution then the base will increase.
Neutral substances have a pH value equal to 7. They are neither acidic nor basic.
Explanation of Lab
We tested the pH of household items by placing the solution on the pH paper and waiting to see what color the litmus paper changed to. Once it has changed colors, compare the new color to the pH color chart.
pH test paper (6 strips)
pH Color chart
30 Small cups
30 Paper towels
10 Plastic bags
- Measuring spoons (teaspoon)
1 to 2 ounces of the following liquids:
Pepper in Vinegar
Lysol - Toilet Bowl Cleaner
Lysol - Disinfectant Spray
- Egg Yolk
Procedure of Experimental Methods
1. Get out all of the household items that will be tested.
2. Label each paper towel to the name of the household item tested.
3. Label each paper cup to the name of the liquid substances tested.
4. And if any household items are not a liquid then, use the plastic bag. By taking the household item and placing it in the plastic bag, zip it up, and use your hand to crush the household item and add 1 teaspoon of water until it becomes an aqueous solution.
5. Once you have all aqueous solutions, take 1 teaspoon and pour the solution into the corresponding paper cup.
6. Take out the 6 pH testing papers and cut each strip into fourths.
7. Dip one new, unused pH paper into the solution in the paper cup.
8. After dipped into the liquid substance, lay the pH paper on the corresponding paper towel and let it dry for 10 seconds.
9. Compare the pH-tested paper to the pH color chart. By comparing each pH value 1-12 to see which color is the most similar.
10. Then record the results in the data table called “Real pH Value”.
11. After finding the pH number value write down in the next column if it is an acid, base, or neutral. Very acidic(reds and oranges), acidic(yellows), neutral(green), basic(light blue), and very basic(dark blue and purple).12. Repeat steps 7-12 for every household item tested. (The only thing that should be changed through the experiment is the liquid substance tested.)