Potassium dichromate is an orange colour crystal and is an important compound used as an oxidant in many reactions How will you account for the colour of potassium dichromate crystals?

Potassium dichromate is an orange coloured crystal and is an important compound used as an oxidant in many reactions How do you prepare K_2Cr_2O_7 from chromite ore?

Potassium dichromate belongs to which crystal system

Excess of Li makes LiCl crystal pink and excess of K makes KCI crystals lilac. Is this true? How will you account for the above processes?

Alkali metals show characteristic flame colouration. The flame colour of Li are crimson red while that of K is violet. How will you account for this?

The oxidation state of chromium in the final product formed by the reaction between Kl and acidified potassium dichromate solution is

How do you account for the following observations? a) Though alkaline potassium permanganate and acidic potassium permanganate both are used as oxidants, yet in the manufacture of benzoic acid from toluene we use alcoholic potassium permanganate as an oxidant. Why? Write a balanced redox equation for the reaction. b) When concentrated- sulphuric acid is added to an inorganic mixture containing chloride, we get colourless pungent smelling gas 'HCl', but if the mixture contains bromide, then we get red vapours of bromine. Why?