[tex]Fe_{2}O_{3} + 6HCl = 3H_{2}O + 2FeCl_{3}\\FeCl_{3} + 3NaOH = 3NaCl + Fe(OH)_{3}\\Fe(OH)_{3} + 3HCl = 3H_{2}O + FeCl_{3}[/tex]Количество коэффициентов получается 23.
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[tex]Fe_{2}O_{3} + 6HCl = 3H_{2}O + 2FeCl_{3}\\FeCl_{3} + 3NaOH = 3NaCl + Fe(OH)_{3}\\Fe(OH)_{3} + 3HCl = 3H_{2}O + FeCl_{3}[/tex]
Количество коэффициентов получается 23.