Câu hỏi của cao xuan hung

Question

H2 khu sat theo phan ung sau

fe3o4+h2------->fe+h2o

a,lap phuong trinh phan ung

b,can bao nhieu ml h2 de phan ung het voi4,64 gam fe3o4

c, neu thay h2 bang co thi phai dung het bao nhieu ml co ....

Diệp Anh Tú · Accepted Answer

a )  Fe3O4 + 4H2 $\rightarrow$ 3Fe + 4H2O

b) $nFe_3O_4=\frac{4,64}{232}=0,02\left(mol\right)$

Theo PTHH $nH_2=4nFe_3O_4=4\cdot0,02=0,08\left(mol\right)$

$\Rightarrow V_{H2}=0,08\cdot22,4=1,792\left(l\right)=1792\left(ml\right)$

c)

Fe3O4 + 4CO $\rightarrow$ 3Fe + 4CO2

...0,02.........0,08

$V_{CO}=1792\left(ml\right)$Câu trả lời: a )  Fe3O4 + 4H2 $\rightarrow$ 3Fe + 4H2O

b) $nFe_3O_4=\frac{4,64}{232}=0,02\left(mol\right)$

Theo PTHH $nH_2=4nFe_3O_4=4\cdot0,02=0,08\left(mol\right)$

$\Rightarrow V_{H2}=0,08\cdot22,4=1,792\left(l\right)=1792\left(ml\right)$

c)

Fe3O4 + 4CO $\rightarrow$ 3Fe + 4CO2

...0,02.........0,08

$V_{CO}=1792\left(ml\right)$

Lê Thu Dương · Answer

a) Fe3O4+4H2--->3Fe+4H2O

b) n Fe3O4=4,64/232=0,02(mol)

Theo pthh

n H2=4n FE3O4=0,08(mol)

V H2=0,08.22,4=1,792 l=1792ml

c)Fe3O4+4CO--->3Fe+4CO2

0,02-----0,08(mol)

V CO=0,08.22,4=1,792l=1792mlCâu trả lời: a) Fe3O4+4H2--->3Fe+4H2O