small quantity of light green coloured substance is heated .in the beginning, it loses some water
and then suffocating gas is evolved and a red residue is left behind. Answer the following:
a) Name the red residue and write its formula.
b) Name the suffocating gas or gases and write its formula.
c) Name the light green coloured substance and write its formula.

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Solution

A.) Ferric Oxide is the residue Fe2O3(solid).

B). There are 2 suffocating gases evolved
1. Sulphur Dioxide and 2.Sulphur trioxide.

C).The light green substance is Ferrous Sulphate (FeSO4).

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A.) Ferric Oxide is the residue Fe2O3(solid). B). There are 2 suffocating gases evolved ​​​​​​ 1. Sulphur Dioxide and 2.Sulphur trioxide. C).The light green substance is Ferrous Sulphate (FeSO​4).

A.) Ferric Oxide is the residue Fe2O3(solid).

B). There are 2 suffocating gases evolved
1. Sulphur Dioxide and 2.Sulphur trioxide.

C).The light green substance is Ferrous Sulphate (FeSO4).