3. Name the substance which remains in a test tube after heating ferro

1.	3. Name the substance which remains in a test tube after heating ferrous sulphate.4.Observedouble displacement reactions given in the text book and write down the similarities.
Answer» 3)Heating ferrous sulphate in a test tube, following reaction will takes place: FeSO₄.7H₂O ------>FeSO₄ + 7H₂O 2FeSO₄---->Fe₂O₃ + SO₂ +SO₃ Both SO₂ that is sulfur dioxide and SO₃ that is sulfur trioxide, are gases that are colorless and evolved out. Only Fe₂O₃, that is ferric oxide which is reddish brown in color remained in the teat tube. So the answer is Fe₂O₃, that is ferric oxide which is reddish brown in color remain in a test tube after heating ferrous sulfate.

3. Name the substance which remains in a test tube after heating ferrous sulphate.4.Observedouble displacement reactions given in the text book and write down the similarities.

Answer»

3)Heating ferrous sulphate in a test tube, following reaction will takes place:

FeSO₄.7H₂O ------>FeSO₄ + 7H₂O

2FeSO₄---->Fe₂O₃ + SO₂ +SO₃

Both SO₂ that is sulfur dioxide and SO₃ that is sulfur trioxide, are gases that are colorless and evolved out.

Only Fe₂O₃, that is ferric oxide which is reddish brown in color remained in the teat tube.

So the answer is Fe₂O₃, that is ferric oxide which is reddish brown in color remain in a test tube after heating ferrous sulfate.