testing pH
AIM: to test the pH of a range of household chemicals.
EQUIPMENT:a variety of house hold chemicals,spotting tile,red litmus paper,blue litmus paper,Universal indicator solution,safety glasses.
METHOD:
1- add a few drops of each chemicalto 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 chemicals with litmus papers.
3-test each chemical with a few drops of universal indicator.
RESULTS:
| chemical being tested | colour in blue litmus | clour in red litmus | colour in universal indicator |
| Morning fresh | purple | red | green |
| Harpic | purple | red | yellow |
| dettol | red | red | yellow |
| bam | blue | blue | purple |
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