Fe cl2 FeCl3 Fe(OH) Fe (SO4) Fecl3
1: Nacl-->cl2--->fecl3 -->AgCl 2: hcl--> cl2---> fecl3--> fe(oh)3-->fe2o3 3: feS2--> fe2o3-->fe2(so4)3-->fecl3-->fe(oh)3 4: co-->co2-->na2co3-->caco3-->cao 5: hcl-->cl2--->fecl3-->fe(oh)3-->fe2o3-->fe-->ah 6: ca-->cao-->cả(oh)2-->mg(oh)2-->mgso4 GIÚP EM VỚI ẠAAA
Viết Pt hoàn thành sơ đồ sau:
A, NaCl => HCl=> Cl2 => FeCl3=> FeCl2=> Fe=> Fe(NO3)3
B, Fe2O3=> FeCl3=> Fe(OH)3=>Fe2(SO4)3=> BaSO4
\(a.\)
\(NaCl+H_2SO_4\underrightarrow{t^0}NaHSO_4+HCl\)
\(2KMnO_4+16HCl\rightarrow2KCl+2MnCl_2+5Cl_2+8H_2O\)
\(Fe+\dfrac{3}{2}Cl_2\underrightarrow{t^0}FeCl_3\)
\(2FeCl_3+Fe\rightarrow3FeCl_2\)
\(FeCl_2\underrightarrow{đpdd}Fe+Cl_2\)
\(Fe+2AgNO_3\rightarrow Fe\left(NO_3\right)_2+2Ag\)
\(b.\)
\(Fe_2O_3+6HCl\rightarrow2FeCl_3+3H_2O\)
\(FeCl_3+3NaOH\rightarrow Fe\left(OH\right)_2+3NaCl\)
\(2Fe\left(OH\right)_2+3H_2SO_4\rightarrow Fe_2\left(SO_4\right)_3+6H_2O\)
\(Fe_2\left(SO_4\right)_3+3BaCl_2\rightarrow2FeCl_3+3BaSO_4\)
Fe->FeCl2->FeCl3->Fe(OH)3->Fe2(SO4)3->FeCl3->FeCl2->Fe(OH2)
\(Fe+2HCl\rightarrow FeCl_2+H_2\\ 2FeCl_2+Cl_2\xrightarrow[]{t^0}2FeCl_3\\ FeCl_3+3NaOH\rightarrow Fe\left(OH\right)_3+3NaCl\\ 2Fe\left(OH\right)_3+3H_2SO_4\rightarrow Fe_2\left(SO_4\right)_3+6H_2O\\ Fe_2\left(SO_4\right)_3+3BaCl_2\rightarrow2FeCl_2+3BaSO_4\\ 2FeCl_2+Fe\xrightarrow[]{t^0}3FeCl_2\\ FeCl_2+2NaOH\rightarrow Fe\left(OH\right)_2+2NaCl\)
Viết PTHH hoàn thành sơ đồ sau: HCl → Cl2→ FeCl3 → Fe(OH)3 → Fe2(SO4)3
\(4HCl+MnO_2\rightarrow MnCl_2+2H_2O+Cl_2\uparrow\\ 2Fe+3Cl_2\underrightarrow{t^o}2FeCl_3\\ FeCl_3+3NaCl\rightarrow Fe\left(OH\right)_3\downarrow+NaCl\\ 2Fe\left(OH\right)_3+3H_2SO_4\rightarrow Fe_2\left(SO_4\right)_3+6H_2O\)
Viết các phương trình phản ứng xảy ra cho các sơ đồ sau:
1. HCl -> Cl2 -> FeCl3 -> NaCl -> HCl -> CuCl2 -> AgCl
2. KMnO4 ->Cl2->HCl ->FeCl3 -> AgCl -> Cl2->Br2->I2
3. KMnO4 → Cl2 → HCl →FeCl2 → AgCl → Ag
4. HCl → Cl2→ FeCl3 → Fe(OH)3 → Fe2(SO4)3
1,
\(4HCl+MnO_2\rightarrow MnCl_2+2H_2O+Cl_2\\ 2Fe+3Cl_2\underrightarrow{t^o}2FeCl_3\\ FeCl_3+3NaOH\rightarrow Fe\left(OH\right)_3\downarrow+3NaCl\\ 2NaCl+H_2SO_4\rightarrow Na_2SO_4+2HCl\uparrow\\ CuO+2HCl\rightarrow CuCl_2+H_2O\\ CuCl_2+2AgNO_3\rightarrow2AgCl\downarrow+Cu\left(NO_3\right)_2\)
2,
\(2KMnO_4+16HCl\rightarrow2KCl+8H_2O+5Cl_2+2MnCl_2\\ Cl_2+H_2\underrightarrow{as}2HCl\\ 6HCl+Fe_2O_3\rightarrow2FeCl_3+3H_2O\\ FeCl_3+3AgNO_3\rightarrow3AgCl\downarrow+Fe\left(NO_3\right)_3\\ 2AgCl\underrightarrow{as}2Ag+Cl_2\\ Cl_2+2NaBr\rightarrow2NaCl+Br_2\\ Br_2+2NaI\rightarrow2NaBr+I_2\)
3,
2 pthh đầu giống ở 2
\(Fe+2HCl\rightarrow FeCl_2+H_2\\ FeCl_2+2AgNO_3\rightarrow2AgCl\downarrow+Fe\left(NO_3\right)_2\\ 2AgCl\underrightarrow{as}2Ag+Cl_2\)
4, 2 pthh đầu gióng ở 1
\(FeCl_3+3NaOH\rightarrow Fe\left(OH\right)_3\downarrow+3NaCl\\ 2Fe\left(OH\right)_3+3H_2SO_4\rightarrow Fe_2\left(SO_4\right)_3+6H_2O\)
Cân bằng phản ứng 1. Fe + Cl2 -------- FeCl3 2. Ba(NO3) + Na2Co3 ------- BaCO3 + NaCo3 3. Al + HCl ------ AlCl3 + H2 4. H2SO4 + Fe (OH)3 ------- Fe2 (SO4)3 5. Fe2O3 + CO -------- Fe + CO2
1) \(2Fe+3Cl_2\underrightarrow{t^o}2FeCl_3\)
2) \(Ba\left(NO_3\right)_2+Na_2CO_3\rightarrow BaCO_3\downarrow+2NaNO_3\)
3) \(2Al+6HCl\rightarrow2AlCl_3+3H_2\)
4) \(3H_2SO_4+2Fe\left(OH\right)_3\rightarrow Fe_2\left(SO_4\right)_3+6H_2O\)
5) \(Fe_2O_3+3CO\underrightarrow{t^o}2Fe+3CO_2\)
Fe->FeCl3->Fe(OH)3->Fe2O3->Fe(SO4)3->Fe(OH)3
\(2Fe+3Cl_2\underrightarrow{t^o}2FeCl_3\)
\(FeCl_3+3NaCl\rightarrow3NaCl+Fe\left(OH\right)_2\)
\(2Fe\left(OH\right)_2\underrightarrow{t^o}Fe_2O_3+3H_2O\)
\(Fe_2O_3+3H_2SO_4\rightarrow Fe_2\left(SO_4\right)_3+3H_2O\)
\(Fe_2\left(SO_4\right)_3+6NaOH\rightarrow3Na_2SO_4+2Fe\left(OH\right)_3\)
Viết PTHH
a, Al-->Al2O3-->AlCl3-->Al(OH)3-->Al203-->Al
"(AlCl3-->Al(NO3)3
b, Fe-->Fe3O4-->FeCl3-->Fe(OH)3-->Fe2O3-->Fe
c, Fe(OH)3-->Fe2(SO4)3-->FeCl3-->Fe(NO3)3
\(a,4Al+3O_2\xrightarrow[t^0]{}2Al_2O_3\\ Al_2O_3+6HCl\rightarrow2AlCl_3+3H_2O\\ AlCl_3+3AgNO_3\rightarrow Al\left(NO_3\right)_3+3AgCl\\ AlCl_3+3NaOH\rightarrow Al\left(OH\right)_3+3NaCl\\ 2Al\left(OH\right)_3\xrightarrow[t^0]{}Al_2O_3+3H_2O\\ 2Al_2O_3\xrightarrow[đpnc]{criolit}4Al+3O_2\\ b,3Fe+2O_2\xrightarrow[t^0]{}Fe_3O_4\\ Fe_3O_4+8HCl\rightarrow2FeCl_3+FeCl_2+4H_2O\\ FeCl_3+3NaOH\rightarrow Fe\left(OH\right)_3+3NaCl\\ 2Fe\left(OH\right)_3\xrightarrow[t^0]{}Fe_2O_3+3H_2O\\ Fe_2O_3+3CO\xrightarrow[t^0]{}2Fe+3CO_2\)
\(c,2Fe\left(OH\right)_3+3H_2SO_4\rightarrow Fe_2\left(SO_4\right)_3+6H_2O\\ Fe_2\left(SO_4\right)_3+3BaCl_2\rightarrow2FeCl_3+3BaSO_4\\ FeCl_3+AgNO_3\rightarrow Fe\left(NO_3\right)_3+3AgCl\)
hoàn thành dãy sơ đồ pung:Fe2O3 -->Fe -->FeCl3 -->FeCl2 -->FeCl3 -->Fe(OH)3 -->Fe2(SO4)