Question

Determine the type of reaction:

Ca(NO3)2 + KBr → ?

A) Synthesis
B) Decomposition
C) Combustion
D) Single replacement
E) Double replacement

Answer 1

The reaction Ca(NO3)2 + KBr is a double replacement reaction.

Step-by-step explanation:

A double replacement reaction is a type of chemical reaction where the cations and anions of two different compounds switch places with each other to form new compounds. In the reaction Ca(NO3)2 + KBr, both Ca(NO3)2 and KBr are soluble according to the solubility rules. By switching the cations and anions, we would get CaBr2 and KNO3 as the possible products. However, these two substances are also soluble, so no precipitate would form. Therefore, the correct answer is E) Double replacement.