[hóa 10] cân bằng

V

vy000

$Fe_xO_y + H_2SO_4 --> Fe_2(SO_4)_3+ S + H_2O$

$2xFe^{+\dfrac{2y}x} \rightarrow x2Fe^{+3}+2(3x-2y)e$|x3

$S^{+6}+6e \rightarrow S^0$ |x(3x-2y)



$6Fe_xO_y + (12x-2y)H_2SO_4 --> 3xFe_2(SO_4)_3+ (3x-2y)S + (12x-2y)H_2O$
 
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