3. Дополните следующие реакции.
1. __К + ___ __K2O
2. __К + ___ __K2O
3. CaO + ____ CaCO3
4. CaO + ____Ca(OH)2
5. __S + ___ __SO2
6. SO2 + __NaOH _____ + _____
7. SO2 + ____ CaSO3
8. SO2 + ____ H2SO3
9. __Zn + ___ __ ZnO
10. ZnO + __NaOH _____ + _____
11. ZnO + ____ ZnSO3
12. Al + ____ H3AlO3+ _____
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