Question

Methyl orange is added to dilute hydrochloric acid and to aqueous sodium hydroxide. What is the colour of the methyl orange in each solution?

Options

• Colour in dilute hydrochloric acid	Colour in aqueous sodium hydroxide
  Orange	Red

• Colour in dilute hydrochloric acid	Colour in aqueous sodium hydroxide
  Red	Yellow

• Colour in dilute hydrochloric acid	Colour in aqueous sodium hydroxide
  Red	Orange

• Colour in dilute hydrochloric acid	Colour in aqueous sodium hydroxide
  Yellow	Red

Answer 1

Colour in dilute hydrochloric acid	Colour in aqueous sodium hydroxide
Red	Yellow

Explanation:

Methyl orange turns red in acids and yellow in bases.