Question

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Answer 1

\(1,2Na+S\rightarrow^{t^o}Na_2S\\ 2,Mg+2HCl\rightarrow MgCl_2+H_2\\ 3,2Al+3Cl_2\rightarrow^{t^o}2AlCl_3\\ 4,Fe_3O_4+4CO\rightarrow^{t^o}3Fe+4CO_2\\ 5,4Fe\left(OH\right)_2+O_2+2H_2O\rightarrow^{t^o}4Fe\left(OH\right)_3\uparrow\)

Answer 2

Câu 12: 

1. 2Na + S → Na₂S

2. Mg + 2HCl → MgCl₂ + H₂

3. 2Al + 3Cl₂ → 2AlCl₃

4. Fe₃O₄ + 4CO → 3Fe + 4CO₂

5. 4Fe(OH)₂ + O₂ + 2H₂O → 4Fe(OH)₃