Question

Colour of ph paper of 1) saliva before meal 2)saliva after meal 3)lemon juice 4)colourless aerated drink 5)carrot juice 6)coffee 7)tomato juice 8)tap water 9)1M NaOH 10)1M HCL

Answer 1

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value and color of ph paper would be approximately around:

✯ before meal: 7 { green }
✯ after meal: 5 { yellow }
✯ lemon juice: 2 { pink }
✯ colorless aerated drink: 6 { lime green }
✯ carrot juice: 5.6 { yellow / green }
✯ coffee: 5  { yellow }
✯ tomato juice: 4{ beige }
✯ tap water: 7 { green / lime green }
✯ NaOH: 14 { purple }
✯ HCL: 1 { red }

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hope it helps :)

Answer 2

Answer:

1. before meal: 7 { green }
2. after meal: 5 { yellow }
3. lemon juice: 2 { pink }
4. colorless aerated drink: 6 { lime green }
5. carrot juice: 5.6 { yellow / green }
6. coffee: 5  { yellow }
7. tomato juice: 4{ beige }
8. tap water: 7 { green / lime green }
9. NaOH: 14 { purple }
10. HCL: 1 { red }

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