Question

(b) Which of the following reactions represents a combination reaction

(i) CaCO > CaO + CO, (ii) Zn + CuSO, ZnSO + Cu
(iii) CaO + H2O Ca(OH)2 (iv) 2Na+ H2O → 2NaOH + H.

Answer 1

3. CaO+H2O ---> Ca(OH)2

Step-by-step explanation:

Combination reactions look like...

a + b = ab

- Hope that helps! Please let me know if you need further explanation.