A crystalline substance of green colour 'X' emits gases of characteristic odour when heated over a flame. It…
A crystalline substance of green colour 'X' emits gases of characteristic odour when heated over a flame. It first loses water and changes colour. On further heating, it decomposes and produces a solid compound Y.
(a) Identify 'X' and 'Y'.
(b) State the change in colour observed when 'X' is heated.
Solution
(a) X = FeSO4.7H2O / Ferrous Sulphate Crystals
Y = Fe2O3/ Ferric Oxide
(b) Green to white /brown