\(\left(1\right)Fe+2HCl--->FeCl_2+H_2\)
\(\left(2\right)FeCl_2+2NaOH--->Fe\left(OH\right)_2+2NaCl\)
\(\left(3\right)Fe\left(OH\right)_2\overset{t^o}{--->}FeO+H_2O\)
\(\left(4\right)2Fe+3Cl_2\overset{t^o}{--->}2FeCl_3\)
\(\left(5\right)FeCl_3+3NaOH--->Fe\left(OH\right)_3+3NaCl\)
\(\left(6\right)2Fe\left(OH\right)_3\overset{t^o}{--->}Fe_2O_3+3H_2O\)
\(\left(7\right)3Fe+2O_2\overset{t^o}{--->}Fe_3O_4\)
Đúng 1
Bình luận (1)
