In this post, you will find NCERT Class 10 Science Activity 2.11 Explanation in detail. This activity is based on chapter 2 Acids, Bases and Salts of class 10 science.
NCERT Class 10 Science Activity 2.11 Explanation
Activity- Test the pH
values of solutions given in the table ...
· Record
your observations.
· What
is the nature of each substance on the basis of your observation?
Table
|
S. No. |
Solution |
Colour of pH paper |
Approximate pH value |
Nature of substance |
|
1 2 3 4 5 6 7 8 9 10 |
Saliva
(before meal) Saliva
(after meal) Lemon
juice Colourless
aerated drink Carrot
juice Coffee Tomato
juice Tap
water 1M
NaOH 1M
HCI |
|
|
|
Observation and Conclusion:
|
S. No. |
Solution |
Approximate pH Value |
Nature of substance |
|
1 2 3 4 5 6 7 8 9 10 |
Saliva Lemon juice Colourless aerate drink Carrot juice Coffee Tomato juice Tap water 1 M NaOH 1
M HCI |
6.5 to 7.5 2.2 to 2.4 5.9 to 6.0 6.4 to 6.6 4.5
to 5.5 4.1 6.9 to 7 14 0 |
Neutral Acidic Acidic Acidic Acidic Acidic Neutral Basic Acidic |
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