Question

2g of ferrous sulphate crystals are heated in a dry boiling tube. Answer the following :

(i) List any two observations.
(ii) Name the type of chemical reaction taking place taking place.
(iii) Write the chemical equation of the reaction.​

Answer 1

Answer:

WHEN 2 g OF FERROUS SULPHATE CRYSTALS ARE HEATED WE CAN OBSERVE THE FOLLOWING :-

THE COLOUR OF THE FERROUS SULPHATE CRYSTALS CHANGES FROM GREEN TO WHITE

ALSO WATER DROPLETS CAN BE SEEN IN THE MOUTH OF THE TEST TUBE

ON FURTHER HEATING OF THE ANHYDROUS FERROUS SULPHATE CRYSTALS

THE COLOUR CHANGES FROM WHITE TO BROWN

ALSO WE CAN OBSERVE THE EVOLUTION OF A PUNGENT SMELLING GAS WHICH IS SULPHUR DIOXIDE AND SULPHUR TRIOXIDE

ii)IT IS A THERMAL DECOMPOSITION REACTION

iii) 2FeSO4 -----HEAT----->Fe2O3 + SO2 + SO3

Explanation:

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