Câu hỏi của Vy Yen Dinh

Question

Hoàn thành các PTHH sau

1. Al + O2  -> ...          2. KMnO4 -> ....            3. KClO3  -> ...           4. CuO + H2 -> ....

5. K + H2O ->...           6. H2 + FeO4 ->...         7. Al + H2S...

thuongnguyen · Accepted Answer

1, 4Al + 3O2 $\rightarrow$2Al2O3

2, 2KMnO4 $\rightarrow$K2MnO4 + MnO2 + O2

3, 2KClO3 $\rightarrow$2KCl + 3O2

4, CuO + H2 $\rightarrow$Cu + H2O

5,2 K+H2O $\rightarrow$K2O + H2

6, H2 + Fe3O4 $\rightarrow$Fe + H2O

7, 2Al + 3H2SO4 $\rightarrow$Al2(SO4)3 + 3H2

, Mg + 2HCl $\rightarrow$MgCl2 + H2

9, 2Na + 2H2O $\rightarrow$2NaOH + H2

10, CaO + H2O $\rightarrow$Ca(OH)2

11, P2O5 + 3H2O $\rightarrow$2H3PO4Câu trả lời: 1, 4Al + 3O2 $\rightarrow$2Al2O3

2, 2KMnO4 $\rightarrow$K2MnO4 + MnO2 + O2

3, 2KClO3 $\rightarrow$2KCl + 3O2

4, CuO + H2 $\rightarrow$Cu + H2O

5,2 K+H2O $\rightarrow$K2O + H2

6, H2 + Fe3O4 $\rightarrow$Fe + H2O

7, 2Al + 3H2SO4 $\rightarrow$Al2(SO4)3 + 3H2

, Mg + 2HCl $\rightarrow$MgCl2 + H2

9, 2Na + 2H2O $\rightarrow$2NaOH + H2

10, CaO + H2O $\rightarrow$Ca(OH)2

11, P2O5 + 3H2O $\rightarrow$2H3PO4

I☆love☆you · Answer

1,4Al + 3O2 -> 2Al2O3

2, 2KMnO4 -> K2MnO4 + MnO4 + O2

3, 2KClO3 -> 2KCl + 3O2

4, CuO + H2 -> Cu + H2O

5, K + 2H2O -> 2KOH + H2

6, Fe3O4 + H2 -> Fe + H2O

7, 2Al + 3H2SO4 -> Al2(SO4)3 + 3H2

8, Mg + 2HCl -> MgCl2 + H2

9, 2Na + 2H2O -> 2NaOH+  H2

10, CaO + H2O -> Ca(OH)2

11, P2O5 + 3H2O -> 2H3PO4Câu trả lời: 1,4Al + 3O2 -> 2Al2O3