Cân bằng các phương trình hóa học

Dưới đây là các phương trình hóa học đã được cân bằng:

1. \( \text{CaO} + \text{H}_2\text{O} \rightarrow \text{Ca(OH)}_2 \)
2. \( \text{CO}_2 + \text{H}_2\text{O} \rightarrow \text{H}_2\text{CO}_3 \)
3. \( \text{SO}_2 + \text{H}_2\text{O} \rightarrow \text{H}_2\text{SO}_3 \)
4. \( \text{SO}_3 + \text{H}_2\text{O} \rightarrow \text{H}_2\text{SO}_4 \)
5. \( \text{N}_2\text{O}_5 + \text{H}_2\text{O} \rightarrow 2 \text{HNO}_3 \)
6. \( \text{P}_2\text{O}_5 + \text{H}_2\text{O} \rightarrow 2 \text{H}_3\text{PO}_4 \)
7. \( \text{NO}_2 + \text{H}_2\text{O} \rightarrow \text{HNO}_3 + \text{HNO}_2 \)
8. \( \text{Cl}_2 + \text{H}_2\text{O} \rightarrow \text{HCl} + \text{HClO} \)
9. \( \text{SO}_2 + \text{Br}_2 + \text{H}_2\text{O} \rightarrow \text{H}_2\text{SO}_4 + \text{HBr} \)
10. \( \text{Na}_2\text{O} + \text{SO}_2 \rightarrow \text{Na}_2\text{SO}_3 \)
11. \( \text{BaO} + \text{SO}_2 \rightarrow \text{BaSO}_3 \)
12. \( \text{K}_2\text{O} + \text{CO}_2 \rightarrow \text{K}_2\text{CO}_3 \)
13. \( \text{CaO} + \text{CO}_2 \rightarrow \text{CaCO}_3 \)
14. \( \text{Na}_2\text{O} + \text{SO}_3 \rightarrow \text{Na}_2\text{SO}_4 \)
15. \( \text{BaO} + \text{SO}_3 \rightarrow \text{BaSO}_4 \)
16. \( \text{K}_2\text{O} + \text{P}_2\text{O}_5 \rightarrow \text{K}_3\text{PO}_4 \)
17. \( \text{CaO} + \text{P}_2\text{O}_5 \rightarrow \text{Ca}_3(\text{PO}_4)_2 \)
18. \( \text{K}_2\text{O} + \text{N}_2\text{O}_5 \rightarrow \text{KNO}_3 \)
19. \( \text{BaO} + \text{N}_2\text{O}_5 \rightarrow \text{Ba(NO}_3)_2 \)
20. \( \text{Na}_2\text{O} + \text{HCl} \rightarrow \text{NaCl} + \text{H}_2\text{O} \)
21. \( \text{CaO} + \text{HCl} \rightarrow \text{CaCl}_2 + \text{H}_2\text{O} \)
22. \( \text{Al}_2\text{O}_3 + \text{HCl} \rightarrow 2 \text{AlCl}_3 + 3 \text{H}_2\text{O} \)
23. \( \text{K}_2\text{O} + \text{H}_2\text{SO}_4 \rightarrow \text{K}_2\text{SO}_4 + \text{H}_2\text{O} \)
24. \( \text{BaO} + \text{H}_2\text{SO}_4 \rightarrow \text{BaSO}_4 + \text{H}_2\text{O} \)
25. \( \text{Fe}_2\text{O}_3 + \text{H}_2\text{SO}_4 \rightarrow \text{Fe}_2(\text{SO}_4)_3 + 3 \text{H}_2\text{O} \)
26. \( \text{K}_2\text{O} + \text{HNO}_3 \rightarrow \text{KNO}_3 + \text{H}_2\text{O} \)
27. \( \text{ZnO} + \text{HNO}_3 \rightarrow \text{Zn(NO}_3)_2 + \text{H}_2\text{O} \)

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