Question

When a green iron salt is heated strongly its colour finally changes to black and odour of burning sulphur is given out.
a) Name the iron salt
b) Name the type of reaction that take place during the heating of iron salt.
c) Write the balanced chemical equation for the reaction involved.​

Answer 1

Answer:

a) green Iron Salt is the common name of iron sulphate FeSO4

b) FeSO4 when heated gets disproportionated and gives ferric oxide powder, Sulphur dioxide and sulphur trioxide gases.

c) 2FeSO4 --> Fe2O3 + SO2 +SO3