Learning goal 1: Select which of the following are decomposition reactions. ZnCO (s) → ZnO (s) + CO (g)CaCO (s) → CaO (s) + CO (g)2NO (g) → 2N (g) + O (g)TiCl (aq) + 2Mg (s) → Ti (s) + 2MgCl (aq)
Question
Learning goal 1: Select which of the following are decomposition reactions. ZnCO (s) → ZnO (s) + CO (g)CaCO (s) → CaO (s) + CO (g)2NO (g) → 2N (g) + O (g)TiCl (aq) + 2Mg (s) → Ti (s) + 2MgCl (aq)
Solution
The decomposition reactions from the given list are:
- ZnCO (s) → ZnO (s) + CO (g)
- CaCO (s) → CaO (s) + CO (g)
- 2NO (g) → 2N (g) + O (g)
Decomposition reactions are those in which a single compound breaks down into two or more simpler substances. In the above reactions, a single reactant breaks down to form two products, which is characteristic of decomposition reactions. The last reaction is not a decomposition reaction because it involves more than one reactant.
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