`2Fe + 3/2 O_2 rarr Fe_(2)O_(3) " "xkJ//"mole"`
`2Fe + O_(2) rarr 2FeO " "ykJ//"mole"`
The to form one mole of Fe3O4 from Fe and `O_2` is :

Options

A. `(x)/(2)+y`
B. `(2x+y)/(2)`
C. `(2x-y)/(2)`
D. `(y-2x)/(2)`

Answer

2

Explanation

`{:(2Fe+(3)/(2)O_(2),rarr,Fe_(2)O_(3),,xkJ//mol e(2)),(2Fe+O_(2),rarr,2FeO,,ykJ//mol exx(1)):}`
`bar(6Fe+4O_(2)rarr2Fe_(2)O_(3)+2FeO)`
`:.2x+y=2` mole of `F_(3)O_(4)" "( :'FeO+Fe_(2)O_(3)rarr Fe_(3)O_(4))" ":.1` mole of `Fe_(3)O_(4)=((2x+y)/(2))`