Question

14) Note
Observation table :
Use of universal indicator
Sample
Sr. No.
Colour produced
Approximate pH
SO
Dilute HCI
2.
Dilute NaOH solution
Lemon juice
lai
4.
Distilled water
me
the
5.
Acetic (ethanoic) acid solution
6.
Sodium sulphate solution
7.
Ammonium chloride solution
em
8
Sodium bicarbonate solution​

Answer 1

1) Dilute HCL

color: red

approx. pH : 3

2) Dilute NaOH

color: blue-violet

approx. pH: 12

3) Lemon juice

color: yellowish orange

pH : 5 or 6

4) Distilled water

color:green

pH:7

5) Acetic acid solution

color: orange-yellow

pH: 5 or 6

6) sodium sulphate solution

color:greenish

pH: 7

7) ammonium chloride solution

color:yellow-orange

pH: 5 or 6

8) sodium bicarbonate solution

color: bluish- purple

pH: 9 or 10

Answer 2

Answer:

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