Question

four student a,b,c and d were asked to carry out a decomposition reaction.each one followed different method as mentioned.
1.heat aqueous solution of iron sulphate in a test tube.
2.added Zn granules to iron sulphate in a test tube and than heated the mixture.
3.heated crystals of iron sulphate in test tube.
4.heated crystals of iron sulphate along with copper sulphate cystals in a china dish.
which students adopted the correct method.​

Answer 1

Answer:

student 3

Explanation:

heating of iron sulphate is a decomposition reaction:

              heat

FeSO₄ -------------> Fe₂0₃ + SO₂ + SO₃

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