Column A
12. 2SO32SO₂ + O₂
13. AgNO3 + Nal-AgI + NaNO3
14. Zn + SnCl₂ →→→ ZnCl₂ + Sn
15. C + O₂ CO₂
16. C + H₂O →CO + H₂
Column B
A decomposition
B double replacement
C single replacement
D synthesis