Question

1.KOH+CO2=2. Nа2O+Н2SO3= 3. Н3РO4+Nа2O=4.Р2O5+ZпО+5. Са(OН)2+Н2S04=6. Са+НСI=7. СаО+НСI=8. СO2+СиO​

Answer 1

2KOH + CO2 = K2CO3 + H2O

Na2O + H2SO3 = Na2SO3 + H2O

2H3PO4 + 3Na2O = 2Na3PO4 + 3H2O

P2O5 + 3ZnO = Zn3(PO4)2

Ca(OH)2 + H2SO4 = CaSO4 + 2H2O

Ca + 2HCl = CaCl2 + H2

CaO + 2HCl = CaCl2 + H2O

CO2 + CaO = CaCO3

Answer 2

It seems you've provided a list of chemical reactions or equations. I can help you balance these chemical equations. Here's the balanced form of each equation:

1. KOH + CO2 → K2CO3
2. 2 Na2O + H2SO3 → 2 Na2SO3
3. 4 H3PO4 + 2 Na2O → 2 P2O5 + 6 H2O + 2 Na2HPO4
4. 3 Ca(OH)2 + 2 H2SO4 → 3 CaSO4 + 4 H2O
5. Ca + 2 HCl → CaCl2 + H2
6. CaO + 2 HCl → CaCl2 + H2O
7. CO2 + SiO2 → SiCO3 (Silicon carbonate is not a common compound)

Please note that reaction number 7 (Ca + HCl) and number 8 (CO2 + SiO2) are not standard reactions, and the products may not be common compounds. If you have more information or context about these reactions, please provide it, and I can try to help further.