EOC

Question 1

What are the different colours of methyl orange in different pH?

Answer 1

Acidic: Red
End-point (neutral): orange
Alkali: Yellow

Question 2

What are the different colours of screened methyl orange in different pH?

Answer 2

Acidic: Purple
End-point (neutral): Grey
Alkali: Green

Question 3

What are the different colours of thymolphthalein in different pH?

Answer 3

Acidic: Colourless
End-point (neutral): Blue
Alkali: Blue

Question 4

What is the precision of burette reading?

Answer 4

Smallest division: 0.1
Uncertainty: 0.05 (2dp)
Reading: e.g 25.50, 30.05