Chemistryeasy · Past Paper
Which of these is an example of a decomposition reaction?
A2H2 + O2 → 2H2O
BCaCO3 → CaO + CO2
CZn + CuSO4 → ZnSO4 + Cu
DNaOH + HCl → NaCl + H2O
✓ Correct Answer: B — CaCO3 → CaO + CO2
Decomposition involves a single reactant breaking down into two or more simpler products, like calcium carbonate breaking into lime and carbon dioxide.
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