Câu hỏi của Lan Hoàng

Question

Hoàn thành các dãy chuyển hoá sau

1) Fe(OH)3->Fe2O3->Fe-> FeCl3->Fe(NO3)3

2) FeS->Fe2O3-> Fe->FeCl3->Fe(OH)3.

3)  Fe->FeCl3->Fe(OH)3->Fe2O3-> Fe.

4) Cu->CuO->CuCl2 -> Cu(OH)2 -> CuSO4

❤ARMY❤❤BTS❤❤❤❤❤ · Accepted Answer

1)

$2Fe\left(OH\right)_3$ -> $Fe_2O_3$ + $3H_2O$

$Fe_2O_3$ + $3CO$ -> $2Fe$ + $3CO_2$

$2Fe+3Cl_2$ -> $2FeCl_3$

$FeCl_3+3AgNO_3$ -> $3AgCl$ +$Fe\left(NO_3\right)_3$

2)

$4FeS+7O_2$ -> $2Fe_2O_3+4SO_2$

$Fe_2O_3+3CO$ -> $2Fe+3CO_2$

$2Fe+3Cl$ ->$2FeCl_3$

$2FeCl_3+3Ba\left(OH\right)_2$->$3BaCl_2+2Fe\left(OH\right)_3$

3)

$2Fe+3Cl_2$ -> $2FeCl_3$

$2FeCl_3+3Ba\left(OH\right)_2$ -> $3BaCl_2+2Fe\left(OH\right)_3$

$2Fe\left(OH\right)_3$ -> $Fe_2O_3+3H_2O$

$Fe_2O_3+3CO$ -> $2Fe+3CO_2$

4)

$2Cu+O_2$ -> $2CuO$

$CuO+2HCl$ -> $CuCl_2+2H_2O$

$CuCl_2+2NaOH$ -> $2NaCl_2+Cu\left(OH\right)_2$

$Cu\left(OH\right)_2+H_2SO_4$ -> $2H_2O+CuSO_4$Câu trả lời: 1)

$2Fe\left(OH\right)_3$ -> $Fe_2O_3$ + $3H_2O$

$Fe_2O_3$ + $3CO$ -> $2Fe$ + $3CO_2$

$2Fe+3Cl_2$ -> $2FeCl_3$

$FeCl_3+3AgNO_3$ -> $3AgCl$ +$Fe\left(NO_3\right)_3$

2)

$4FeS+7O_2$ -> $2Fe_2O_3+4SO_2$

$Fe_2O_3+3CO$ -> $2Fe+3CO_2$

$2Fe+3Cl$ ->$2FeCl_3$

$2FeCl_3+3Ba\left(OH\right)_2$->$3BaCl_2+2Fe\left(OH\right)_3$

3)

$2Fe+3Cl_2$ -> $2FeCl_3$

$2FeCl_3+3Ba\left(OH\right)_2$ -> $3BaCl_2+2Fe\left(OH\right)_3$

$2Fe\left(OH\right)_3$ -> $Fe_2O_3+3H_2O$

$Fe_2O_3+3CO$ -> $2Fe+3CO_2$

4)

$2Cu+O_2$ -> $2CuO$

$CuO+2HCl$ -> $CuCl_2+2H_2O$

$CuCl_2+2NaOH$ -> $2NaCl_2+Cu\left(OH\right)_2$

$Cu\left(OH\right)_2+H_2SO_4$ -> $2H_2O+CuSO_4$

Đề cương ôn tập HKI