Question

please answer fast my questions

Answer 1

1.H2CO2
2.H2SO4
3.CO2+H2O
4.CaO+CO2
5.Zn(SO4)2+H2
6.Na2So4+2H2O
7.Fe2(SO4)3+H2
8.CO

Answer 2

$H_{2}CO_{3} \\ \\ H_{2}SO_{4} \\ \\ CO_{2} +H_{2}O$

CaO+CO₂

Zn(SO₄)2+H₂

Na₂SO₄+2H₂O

Fe₂(SO₄)₃+H₂

CO₂