acids bases salt

1. Chapter- 2
Acids, Bases & Salts
Part - 1

2. Today we will learn about
 Identification of Acids and Bases
 Indicators
 Types of Indicators
 Effect of Indicators on acids and bases

4. Acids in day to day situation

5. Acids in day to day situation

7. Acid Sour
Base Bitter

8. We can not TASTE acid
or base every time.
We need TEST
Not TASTE

9. Chemical
Indicators
Natural
Indicators
Turmeric, Litmus
etc
Synthetic
Indicators
Phenolphthalein,
Methyl Orange
Chemical indicator, any substance that gives a visible sign,
usually by a colour or odour change, of the presence or absence
of a threshold concentration of a chemical species, such as an
acid or a base in a solution.

10. 2.1 UNDERSTANDING THE CHEMICAL PROPERTIES
OF ACIDS AND BASES
2.1.1 Acids and Bases in the Laboratory
Activity 2.1
Sample
solution
Red Litmus
Solution
Blue
Litmus
Solution
Phenolphal
ein
Solution
Methyl
Orange
Solution
Acid*
Base#
Acids* - hydrochloric acid (HCl), sulphuric acid (H2SO4), nitric acid
(HNO3), acetic acid (CH3COOH),
Bases # - sodium hydroxide (NaOH), calcium hydroxide [Ca(OH)2],
potassium hydroxide (KOH), magnesium hydroxide [Mg(OH)2], and
ammonium hydroxide (NH4OH).

12. Sample
solution
Red
Litmus
Solution
Blue
Litmus
Solution
Phenolph
thalein
Solution
Methyl
Orange
Solution
Acid Red Red Colourles
s
Red
Base Blue Blue Pink Yellow

13. An Olfactory indicator is a substance whose smell varies
depending on whether it is mixed with an acidic or basic solution.