10.05.18
Testing Ph
Aim:To test the ph of a range of household chemical.
Equipment:A variety of household chemicals, spotting tile, red litmus paper, blue litmus paper, Universal indicator solution, safety glasses.
Method:
1.Add a few drops of each chemical to a spot on your spotting tile.If a substance is solid or powdered you will need to mix it with a few drops of water before testing it.
2.Test the chemical with litmus paper.
3.Test each chemical with a few drops of universal indicator.
Chemical being tested
|
Colour in blue litmus
|
Colour in red litmus
|
Colour in universal indicator
|
Pledge clean & dust
|
Red-Orange
| ||
Morning fresh
|
Green-Yellow
| ||
Water
|
Green-Blue
| ||
Jif
|
White-Violet
| ||
Active fresh
|
Light blue-orange
| ||
Sulfuric acid
|
Clear acid-Red
| ||
Sodium hydroxide
|
Clear-Blue
|
CONCLUSION
Chemical being tested
|
Acid or Base
|
Evidence from investigation
|
Pledge clean & dust
|
Acid
|
Red-Orange
|
Morning fresh
|
Green-Yellow
| |
Water
|
Base
|
Green-Blue
|
Jif
|
White-Violet
| |
Active fresh
|
Light blue-Orange
| |
Sulfuric acid
|
Clear acid-Red
| |
Sodium hydroxide
|
Clear Blue
| |
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