Question

Which of these is an example of a combination reaction?

a) O2Mg + O₂ → 2MgO
b) CaCO3 → CaO + CO2
c) CuSO4+Zn → Cu+ZnSO4
d) HCI + NaOH → NaCl + H₂O​

Answer 1

Answer:

D) HCl +NaOH × NaCl + H2ao

Answer 2

Explanation:

The  Combination reaction is  CaCO3 → CaO + CO2 .

In this reaction calcium oxide is combines with carbon dioxide to form calcium carbonate.