Question

Table 2.2
Solution
Colour of Approx-Nature of
pH paper imate substance
pH value
Do You
Know?
1 Saliva (before meal)
2 Saliva (after meal)
3 Lemon juice
4 Colourless aerated
drink
What
Plants
the pl
from v
Activi
region
5 Carrot juice
6 Coffee
7 Tomato juice
8 Tap water
9 IM NaOH
10 IM HCI


ANSWER IT ☝☝☝​

Answer 1

1) Saliva : Light green ( Colour of pH paper)

Nature of substance = Neutral

2)Saliva after meal : Yellowish green

3 ) Lemon juice :Light red

4) Colourless aerated drink : Dark yellow

Approximate pH value = 3.5 - 4

Nature = Phosphoric acid

5) Carrot juice : Yellowish green .

Approximate pH value = 6

6) Coffee : Light yellow

pH value = 5

7) Tomato juice : Light orange

pH value = 4 - 4.5

8) Tap water : Greenish

pH value = 7

9) 1 M NaoH : Dark purple

pH value : 14

10) 1 M HCL : Dark red

pH value : 0.5

Answer 2

Answer:

hope this may help u