[ hoá 8 ] cân bằng phương trình

Q

qnhuvcb

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C

chaugiang81


$a. Fe_2O_3 + 6H_2 --> 2Fe + 3H_2O$
1------------6-------------2----------- 3

$b. Cl_2 + H_2O --> HCl + HClO $
1---------2----------------2--------1

$c. C_2H_6O + 3O_2 --> 2CO_2 + 3H_2O$
1----------------3------------2-----------3

$d. 3Fe_3O_4 + 8Al -- 4Al_2O_3 + 9Fe$
3---------------8----------4----------9
 
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