The color of potassium dichromate upon reaction with sulphuric acid changes from__
The chemical reaction between two substances is characterised by a change in colour from orange to green. These two substances are most likely to be : (a) potassium dichromate solution and sulphur dioxide
(b) potassium permanganate solution and sulphur dioxide
(c) potassium permanganate solution and lemon juice
(d) potassium dichromate solution and carbon dioxide.
Identify the anion present in the salt on the basis of the reaction given below
When dilute sulphuric acid is added to salt solution, a gas is produced which turns acidified potassium dichromate solution from orange to green.
Why does sulphur dioxide turns acidified potassium dichromate paper green