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1 câu trả lời
$(1)2Fe+3Cl_2\xrightarrow{t^o}2FeCl_3$
$(2)FeCl_3+3NaOH\to Fe(OH)_3\downarrow+3NaCl$
$(3)2Fe(OH)_3\xrightarrow{t^o}Fe_2O_3+3H_2O$
$(4)Fe_2O_3+3CO\xrightarrow{t^o}2Fe+3CO_2\uparrow$
$(5)Fe+2HCl\to FeCl_2+H_2$
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