Describe the preparation of potassium dichromate from iron chromite ore.

Describe the preparation of Ozone.

Potassium dichromate is used

Describe the oxidising action of potassium dichromate and write the ionic equations for its reaction with (i) iodide (ii) iron (II) solution and (iii) H_(2)S .

Mention two uses of potassium dichromate.

An ore of potassium is:

Describe the preparation of potassium permanganate. How does the acidified permanganate solution react with (i) iron (II) ions (ii) SO_(2) and (iii) oxalic acid? Write the ionic equations for the reactions.

Describe a method of preparation of ozone.

Describe the preparation of ether by dehydrogenation of alcohols.

What happens when potassium dichromate is heated ?

Describe the preparation of aliphatic monocarboxylic acids from ester