Fe+cl2>Fecl3

Na+H2O>Naoh+h2

H2

$\mathop{2Fe}\limits^{0}+\mathop{3Cl_2}\limits^{0}\xrightarrow{to}\mathop{2Fe}\limits^{+3}\mathop{Cl_3}\limits^{-1} $

Quá trình oxi hóa : $\mathop{Fe}\limits^{0}\xrightarrow{} Fe^{+3}+3e $ 

Quá trình khử :$\mathop {Cl_2}\limits^{0} +2e\xrightarrow{} 2Cl^{-1}$

$2Na +2H_2O \xrightarrow{} 2NaOH +H_2$ 

Quá trình oxi hóa $\mathop{Na}\limits^{0}\xrightarrow{} Na^{+1}+1e $ 

Quá trình khử :$\mathop {2H}\limits^{+1} +2e\xrightarrow{} \mathop{H_2}\limits^{0}$

$\mathop{H_2}\limits {0} +\dfrac{1}{2}\mathop{O_2}\limits^{0} \xrightarrow{to}\mathop{H_2}\limits^{+1}\mathop{O}\limits^{-2}$ 

 Quá trình oxi hóa  :$\mathop {H_2}\limits^{0} \xrightarrow{} \mathop{2H}\limits^{+1}+2e$

 Quá trình khử  :$\mathop {O_2}\limits^{0}+4e \xrightarrow{} \mathop{2O}\limits^{-2}$