Question

2. Написать уравнения реакций по схемам: 1) Zn + O2 → ZnO 2) Fe +Cl2 → FeCl3 3) Al + S → Al2S3 4) Ba + O2 → BaO 5) Mg + O2 → MgO6) K + O2 → K2O 7) Ba + O2 → BaO 8) Fe(OH)3 → Fe2O3 + H2O 9) HI → H2 + I2 10) Ca3(PO4)2 → CaO + P2O5​

Answer 1

Ответ:

1) 2Zn + O2 → 2ZnO

2) 2Fe +3Cl2 → 2FeCl3

3) 2Al + 3S → Al2S3

4) 2Ba + O2 → 2BaO

5) 2Mg + O2 → 2MgO

6) 4K + O2 → 2K2O

7) 2Ba + O2 → 2BaO

8) -

9) 2HI → H2 + I2

10) 2Ca3(PO4)2 → 3CaO + P2O5

Answer 2

Chemical Equations for Given Reactions

1) Zn + O2 → ZnO - The balanced chemical equation for the reaction of zinc with oxygen to form zinc oxide is: ``` 2 Zn + O2 → 2 ZnO ```

2) Fe + Cl2 → FeCl3 - The balanced chemical equation for the reaction of iron with chlorine to form iron(III) chloride is: ``` 2 Fe + 3 Cl2 → 2 FeCl3 ```

3) Al + S → Al2S3 - The balanced chemical equation for the reaction of aluminum with sulfur to form aluminum sulfide is: ``` 2 Al + 3 S → Al2S3 ```

4) Ba + O2 → BaO - The balanced chemical equation for the reaction of barium with oxygen to form barium oxide is: ``` 2 Ba + O2 → 2 BaO ```

5) Mg + O2 → MgO - The balanced chemical equation for the reaction of magnesium with oxygen to form magnesium oxide is: ``` 2 Mg + O2 → 2 MgO ```

6) K + O2 → K2O - The balanced chemical equation for the reaction of potassium with oxygen to form potassium oxide is: ``` 4 K + O2 → 2 K2O ```

7) Ba + O2 → BaO - The balanced chemical equation for the reaction of barium with oxygen to form barium oxide is: ``` Ba + O2 → BaO ```

8) Fe(OH)3 → Fe2O3 + H2O - The balanced chemical equation for the decomposition of iron(III) hydroxide to form iron(III) oxide and water is: ``` 2 Fe(OH)3 → Fe2O3 + 3 H2O ```

9) 2 HI → H2 + I2 - The balanced chemical equation for the decomposition of hydrogen iodide into hydrogen and iodine is: ``` 2 HI → H2 + I2 ```

10) Ca3(PO4)2 → CaO + P2O5 - The balanced chemical equation for the decomposition of calcium phosphate into calcium oxide and diphosphorus pentoxide is: ``` Ca3(PO4)2 → 3 CaO + P2O5 ```