Bài 19.6 trang 24 Sách bài tập Hóa học 9

(1) 2Fe + 3${\mathrm{Cl}}_2$$\stackrel{\mathrm{t}°}{\to }$ 2Fe${\mathrm{Cl}}_3$

(2) Fe${\mathrm{Cl}}_3$ + 3NaOH → Fe${\left(\mathrm{OH}\right)}_3$ + 3NaCl

(3) 2Fe${\left(\mathrm{OH}\right)}_3$ → ${\mathrm{Fe}}_2{\mathrm{O}}_3$ + 3${\mathrm{H}}_2\mathrm{O}$

(4) ${\mathrm{Fe}}_2{\mathrm{O}}_3$ + 3${\mathrm{H}}_2{\mathrm{SO}}_4$ → ${\mathrm{Fe}}_2{\left({\mathrm{SO}}_4\right)}_3$ + 3${\mathrm{H}}_2\mathrm{O}$

(5) Fe + 2HCl → Fe${\mathrm{Cl}}_2$ + ${\mathrm{H}}_2$

(6) Fe${\mathrm{Cl}}_2$ + 2NaOH → Fe${\left(\mathrm{OH}\right)}_2$ + 2NaCl

(7) Fe${\left(\mathrm{OH}\right)}_2$ + ${\mathrm{H}}_2{\mathrm{SO}}_4$ → ${\mathrm{FeSO}}_4$ + 2${\mathrm{H}}_2\mathrm{O}$

(8) ${\mathrm{FeSO}}_4$ + Zn → ${\mathrm{ZnSO}}_4$ + Fe