Question

Identify the single displacement reaction.

A. C4H12 + 7O2 ⟶ 6H2O + 4CO2
B. 2H2 + O2 ⟶ 2H2O
C. Al2S3 ⟶ 2Al + 3S
D. Cl2 + 2KBr ⟶ 2KCl + Br2

Answer 1

the displacement reaction is D

Answer 2

Answer : The correct option is, (D)

Explanation :

Option A reaction :
`C_4H_(12)+7O_2\rightarrow 6H_2O+4CO_2`

It is a combustion reaction. A reaction in which a hydrocarbon react with the oxygen to give product as carbon dioxide and water.

Option B reaction :
`2H_2+O_2\rightarrow 2H_2O`

It is a combination reaction. A reaction in which the two or more reactants react to give a product.

Option C reaction :
`Al_2S_3\rightarrow 2Al+3S`

It is a decomposition reaction. A reaction in which a reactant decomposes to form two or more products.

Option D reaction :
`Cl_2+2KBr\rightarrow 2KCl+Br_2`

It is a single displacement reaction. It is a reaction in which the more reactive element displace the less reactive element. In this reaction, most reactive element chlorine displaces the less reactive element bromine.

Hence, the correct option is, (D)