Question

4. What are chemical indicators, give two examples and what is the colour they develop in
acid and basic substances ?


Plz answer me fast

Answer 1

Answer:

The colours from yellow to red indicate an acidic solution, colours blue to violet indicate alkali and green colour indicates that a solution is neutral.

pH range         Description              Colour

< 3                                Strong acid                            Red

3–6                             Weak acid                     Orange or Yellow

7                                    Neutral                                Green

8–11                             Weak alkali                            Blue

Explanation:

Answer 2

Answer:

blue litmus and red litmus are two chemical indicators.

1)blue litmus turns blue in base and red in acid.

2)red litmus turns red in acid and blue in base