Question

2g of ferrous sulphate crystals are heated in a dry boiling tube.
(i) List any two observations.
(ii) Name the type of chemical reaction taking place.
(iii) ‘Write the chemical equation for the reaction.
Answer.

Answer 1

The two perceptions on warming ferrous sulfate are the shade of the compound changes to light green to white which on additionally warming changes to dull darker.

A gas is radiated of a trademark smell of sulfur. It is a case of disintegration response. 2feso4- - 2fe+so4.

Answer 2

(i) Before heating, it is pale green. 

After heating, it is brown or reddish brown.

TWo observations are :

(a) Change in state and colour.

(b) Evolution of gas.

(ii) Decomposition reaction.

(iii) 2FeSO4(s) +Heat → Fe2O3(s) + SO2(g) + SO3(g)



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