Chemistry
(a) What are double displacement reactions?
(b) Give an example of a double displacement reaction, where gas is evolved.
Chemical Reaction
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Answer
(a) Double displacement reactions are those in which two compounds in a solution react to form two new compounds by mutual exchange of radicals. This type of reaction is also known as a double decomposition reaction.
(b) FeS (s) + H2SO4 (aq) ⟶ FeSO4 (aq) + H2S ↑
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