Aim: To test the pH of a range of household chemicals.
Equipment: A variety of household chemicals, spotting tile, red litmus paper, blue litmus paper, UI solution.
Method: 1. As a few drops of each chemical to a spot on your spotting tile. If a substance is solid or powered you will need to mix it with a few drops of water before testing it.
2. Test the chemicals with litmus paper.
3.Test each chemical with a few drops of UI (universal indicator).
Results:
Chemical being tested | Colour in blue litmus | Colour in red litmus | Colour in UI |
Dishwasher Powder | Blue | Blue | Blue |
Floor Cleaner | Blue | Blue | Yellow |
Toilet Cleaner | Red | Red | Red |
Baking Soda | Blue | Blue | Blue |
Chemical being tested | Acid or base? | Evidence from investigation |
Dishwasher Powder | Base | Litmus paper and UI has turned blue |
Floor Cleaner | Base | Both Litmus paper turned blue |
Toilet Cleaner | Acid | Everything turned red |
Baking Soda | Base | Everything turned blue |
Conclusion/Discussion: It turns out that Dishwasher powder, Floor cleaner and Baking soda are all bases while toilet cleaner is the only strong acid, by also using ROYGBIV, Red, Orange, Yellow, Green, Blue, Indigo and Violet (ROYGBIV) is used to show the pH level of a chemical. Such as Red 1, a strong acid to 14 a strong base, and you're probably wanting to know what neutral is right? Its a pH of 7 Green which is basically water. A base is an acid opposite and will remove hydrogen ions from the solution, all bases have Hydroxide ions while acids have hydrogen ions.
Conclusion: Other than that our experiment did work but except for that one yellow you probably saw in the table, I'll guess I will have to try and do something different to make that a better result.
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