Question

# Which of the following reaction is double displacement reaction?

A
FeCl3+3NaOHFe(OH)3+3NaCl
B
Zn+H2SO4ZnSO4+H2
C
2CO+O22CO2
D
N2+O22NO

Solution

## The correct option is A FeCl3+3NaOH→Fe(OH)3+3NaClA double displacement reaction involves exchange of ions between the reactants in order to form the products. In the reaction between ferric chloride and sodium hydroxide, there is exchange of Cl− and OH− ions between the reactants to form ferric hydroxide and sodium chloride. So, it is a double displacement reaction.

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