Question

Which clue can be used to identify a chemical reaction as a decomposition reaction?

Answer 1

Answer:

C

Explanation:

Answer 2

Answer:

The reaction has a single reactant

Explanation:

Decomposition reaction is a reaction in which an insoluble single compound is heated at a high temperature and decomposes into several products.

Typically, we may see decomposition of calcium carbonate producing calcium oxide and carbon dioxide, this is represented by the following reaction:

$CaCO_3 (s)\rightarrow CaO (s) + CO_2 (g)$

Another example would be decomposition of ammonium nitrite. Ammonium nitrite would decompose into nitrogen and water:

$NH_4NO_2 (s)\rightarrow N_2 (g) + 2 H_2O (l)$

Notice that the two examples above share something in common: the two decomposition reactions have a single reactant.