Question

What would the products of a double-replacement reaction between Ca3N2 and Al2O3 be?

A. CaAl and NO
B. CaO and AlN
C. CaN and AlO
D. Ca3O3 and Al2N2

Answer 1

Answer: option B

In double displacement reaction, the reactants interchange ions to form new compounds. The one higher in reactivity series displaces the ions of other reactant and combines with it to form new compound.

The reaction would take place as the following:

`Ca_3N_2+Al_2O_3\rightarrow CaO+AlN`

The balanced reaction would be:

`Ca_3N_2+Al_2O_3\rightarrow 3CaO+2AlN`

Hence, option B is the correct answer.