Question

Classify the following reaction into different type:

(a) AgNO3 + NaCl → AgCl + NaNO3

(b) CaO + H2O → Ca(OH)2

(c) 2KClO3 → 2KCl + 3O2.

Which of the above reaction are precipitation reaction? Why is it called precipitation reaction?​

Answer 1

Answer:

(a) double displacement

(b) combination

(c) decomposition

Answer 2

Answer:

precipitation reaction

B

double displacement reaction

This reaction is both precipitation reaction as well as double displacement reaction.

In a double displacement reaction the anions are exchanged and in a precipitation reaction, a precipitate is formed in the end. In this case, AgCl is the precipitate.