1. Observation;
-Effervescence/fizzing/bubbles
-Blue solution formed with copper,
-Green solution formed with Iron
-Colourless solution formed with Zinc
-Colourless gas produced that has a pungent irritating choking smell.
-Gas produced turn orange moist/damp/wet filter paper dipped in acidified potassium dichromate (VI)solution to green
2. Explanation
Concentrated sulphuric (VI) acid is strong oxidizing agent.
It oxidizes metals to metallic sulphate(VI) salts and itself reduced to sulphur(IV)oxide gas.
Sulphur (IV) oxide gas turn orange moist/damp/wet filter paper dipped in acidified potassium dichromate (VI)solution to green.
CuSO
4(aq) is a blue solution. ZnSO
4(aq) is a colourless solution. FeSO
4(aq) is a green solution.
Wilfykil answered the question on
February 19, 2019 at 07:57