Question

Compare and contrast single displacement reactions and double displacement reactions.

Answer 1

Answer:

The reaction in which an atom or a set of atoms are displaced by another atom in a molecule is called displacement reaction. For instance, when Iron is added to a copper sulfate solution, it displaces the copper metal.

A + B – C → A – C + B

The above equation exists when A is more reactive than B.

The reaction in which two atoms or a group of atoms are displaced by another atom in a molecule is called a double displacement reaction.

A-B + C-D → A-C + B-D

A and B have to be either:

Halogens where C indicates a cation.

Different metals wherein C indicates an anion.

Answer 2

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Single displacement reactions are reactions where one reactant replaces part of the other.

AB + C → AC + B

Double displacement reactions are reactions where the cations and anions in the reactants switch partners to form products.

AB + CD → AD + CB