When dilute sulphuric acid is added to pieces of iron sulphide, hydrogen sulphide gas is produced and soluble ferrous sulphate is formed. The type of chemical reaction involved is
A. decomposition reaction
B. combination reaction
C. displacement reaction
D. double displacement reaction
Answers
Answer:
D. Double Displacement Reaction
Explanation:
Double Displacement Reaction
A double displacement reaction is a type of reaction in which two reactants exchange their ions to form two new compounds. Double displacement reactions usually result in the formation of a product which is a precipitate.
The general reaction of double displacement reaction is as follows.
AB + CD → AD + CB
When dilute sulphuric acid (H2SO4) is added to pieces of iron sulphide (FeS), hydrogen sulphide gas (H2S) is produced and soluble ferrous sulphate (FeSO4) is formed.
H2SO4 + FeS ----------> H2S + FeSO4
In the above reaction, iron changes from iron sulphide to ferrous sulohate amd simultaneously hydrogen changes from sulphuric acid to hydrogen sulphide. Here, ferrous sulphate is precipitate.
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