Identify each type of reaction:

Question

C₂H₅OH + 3 O₂ → 2 CO₂ + 3 H₂O

2 Ca (s) + O₂ (g) → 2 CaO (s) 

CaCO₃ (s) → CaO (s) + CO₂ (g)

C + 2H₂ → CH₄

a. combustion

b. decomposition

c. combination

Answer 1

C₂H₅OH + 3 O₂ → 2 CO₂ + 3 H₂O -- a. combustion

2 Ca (s) + O₂ (g) → 2 CaO (s)  -- c. combination (synthesis)

CaCO₃ (s) → CaO (s) + CO₂ (g) -- b. decomposition

C + 2H₂ → CH₄ -- c. combination (synthesis)