Oxidation Of food

Question 1

Fehling’s solution colour change when oxidising aldehydes to Carboxylic acids

Answer 1

Blue copper(II) ions reduced to a brick red precipitate of copper(I) oxide

Question 2

Tollens’ reagent colour change when oxidising aldehydes to Carboxylic acids

Answer 2

Colourless silver(I) ions are reduced to a grey solid (a silver mirror)

Question 3

Acidified dichromate solution colour change when oxidising aldehydes to Carboxylic acids

Answer 3

Orange dichromate ions reduced to blue-green chromium(III) ions

Question 4

Hit copper(II) oxide colour change when oxidising aldehydes to Carboxylic acids

Answer 4

Black copper(II) oxide reduced to brown copper

Question 5

Name an antioxidant

Answer 5

Vitamin C