Question

2 gram of ferrous sulphate crystals are heated in a dry boiling tube (1) list any two observations (2) name the type of chemical reaction taking place (3) write the the chemical equation for the reaction​
*please answer the question*

Answer 1

Explanation:

1)

observations

(i) THE COLOUR OF FERROUS SULPHATE CHANGES FROM GREEN TO WHITE THEN TO BROWN

ii)WE CAN OBSERVE THAT 2 BURNING SULPHUR GAS COMES OUT FROM THE TESTTUBE

2)IT IS DECOMPOSITION REACTION

3) FeSO4-------> FeO+SO2+SO3

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Answer 2

Answer:

(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)