Chemistrymedium · Past Paper
The reaction $CaO + H_2O \rightarrow Ca(OH)_2 + Heat$ is:
AEndothermic and Combination
BExothermic and Combination
CExothermic and Decomposition
DEndothermic and Displacement
✓ Correct Answer: B — Exothermic and Combination
It is a combination reaction (two reactants form one product) and it releases significant heat energy (exothermic).
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