Observatorul
Observation
Experimental procedure
1. The original colour of Ferrous
sulphate.
2. Ferrous sulphate is heated.
-
--
1
1
1
1
1
1
-
-
-
-
-
3. Colour of the gas evolved during
heating
4. The colour of the substance in
the cold test tube.
-
-
Chemical reaction : 2(FeSO4.7H2O)
A
Fe2O3(s) + SO2(g)
+ SO
+50318)
+ 14H20
2 (g)
Answers
Answered by
0
Answer:
a) The colour of ferrous sulphate is green. It changes to brown after heating.
On heating: FeSO
4
.7H
2
O→FeSO
4
(s)+7H
2
O(g)
b) The product formed is ferric oxide (Fe
2
O
3
). This is a decomposition reaction.
On strong heating: 2FeSO
4
(s)→Fe
2
O
3
(s)+SO
2
(g)+SO
3
(g)
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