Question

Cân bằng các phương trình sau:

1) \(2n+O_2\rightarrow2nO\)

2) \(Fe+Cl_2\rightarrow FeCl_3\)

3) \(Mg+HCl\rightarrow MgCl_2+H_2\)

4) \(Al+HCl\rightarrow AlCl_3+H_2\)

5) \(Al+H_2SO_4\rightarrow Al_2\left(SO_4\right)_{_3}+H_2\)

Answer 1

\(1:2n+O_2\rightarrow2nO\)

2: \(2Fe+3Cl_2\rightarrow2FeCl_3\)

3: \(Mg+2HCl\rightarrow MgCl_2+H_2\)

4: \(2Al+6HCl\rightarrow2AlCl_3+3H_2\)

5: \(2Al+3H_2SO_4\rightarrow Al_2\left(SO_4\right)_3+3H_2\)

Answer 2

1:2n+O2 to→2nO

2: 2Fe+3Cl2 to→2FeCl3

3: Mg+2HCl to→MgCl2+H2

4: 2Al+6HCl →2AlCl3+3H2

5: 2Al+3H2SO4 →Al2(SO4)3+3H2

Answer 3

1) $2n+O_2\to 2nO$

2) $\mathrm{2F}e+\mathrm{3C}{l}_2\to \mathrm{2F}eC{l}_3$

3) $Mg+\mathrm{2H}Cl\to MgC{l}_2+H_2$

4) $\mathrm{2A}l+\mathrm{6H}Cl\to \mathrm{2A}lC{l}_3+{\mathrm{3H}}_2$

5) $\mathrm{2A}l+{\mathrm{3H}}_{2}S{O}_4\to A{l}_2{\left(S{O}_4\right)}_{{}_3}+{\mathrm{3H}}_2$