Fe + Cl2 ----> 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
Fe cl2 FeCl3 Fe(OH) Fe (SO4) Fecl3
\(2FeCl_2 + Cl_2 \rightarrow 2FeCl_3\)
\(FeCl_3 + 3NaOH \rightarrow Fe(OH)_3 + 3NaCl\)
\(2Fe(OH)_3 + 3H_2SO_4 \rightarrow Fe_2(SO_4)_3 + 6H_2O\)
\(Fe_2(SO_4)_3 + 3BaCl_2 \rightarrow 2FeCl_3 + 3BaSO_4\)
\(\left(1\right)FeCl_2+Cl_2\rightarrow FeCl_3.\)
\(\left(2\right)FeCl_3+3NaOH\rightarrow Fe\left(OH\right)_3+3NaCl\).
(3).\(2Fe\left(OH\right)_3+3H_2SO_4\rightarrow Fe_2\left(SO_4\right)_3+6H_2O\).
\(\left(4\right)Fe_2\left(SO_4\right)_3+3BaCl_2\rightarrow2FeCl_3+3BaSO_4\)
2FeCl2+Cl2→2FeCl32FeCl2+Cl2→2FeCl3
FeCl3+3NaOH→Fe(OH)3+3NaClFeCl3+3NaOH→Fe(OH)3+3NaCl
2Fe(OH)3+3H2SO4→Fe2(SO4)3+6H2O2Fe(OH)3+3H2SO4→Fe2(SO4)3+6H2O
Fe2(SO4)3+3BaCl2→2FeCl3+3BaSO4
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
\(FeCl_3+3NaOH\rightarrow Fe\left(OH\right)_3\downarrow+3NaCl\\ 2Fe\left(OH\right)_3+3H_2SO_4\rightarrow Fe_2\left(SO_4\right)_3+6H_2O\)
\(H_2 + Cl_2 \xrightarrow{ánh\ sáng} 2HCl\\ Fe + 2HCl \to FeCl_2 + H_2\\ 2FeCl_2 + Cl_2 \to 2FeCl_3\\ FeCl_3 + 3KOH \to Fe(OH)_3 + 3KCl\\ Fe(OH)_3 + 3HCl \to FeCl_3 + 3H_2O\\ 4HCl + MnO_2 \to MnCl_2 + Cl_2 + 2H_2O\\ \)
\(2NaOH + Cl_2 \to NaCl + NaClO + H_2O\\ NaCl + H_2SO_4 \xrightarrow{t^o} NaHSO_4 + HCl\\ CuO + 2HCl \to CuCl_2 + H_2O\\ CuCl_2 + 2AgNO_3 \to Cu(NO_3)_2 + 2AgCl\)
1.
Cl2 + H2O <->HCl + HClO2HCl + Fe -> FeCl2 + H22FeCl2 + Cl2 -to> 2FeCl3FeCl3 + NaOH -> Fe(OH)3 + NaCl
2Fe(OH)3+6HCl->2FeCl3+3H2O
b>4HCl+MnO2->MnCl2+2H2O+Cl2
Cl2+2Na-to>2NaCl
2NaCl+2H2SO4đ-to>Na2SO4+2HCl
HCl+CuO->CuCl2+H2O
CuCl2+2AgNO3->2AgCl+Cu(NO3)2
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
\(a.\)
\(NaCl+H_2SO_4\underrightarrow{t^0}NaHSO_4+HCl\)
\(2KMnO_4+16HCl\rightarrow2KCl+2MnCl_2+5Cl_2+8H_2O\)
\(Fe+\dfrac{3}{2}Cl_2\underrightarrow{t^0}FeCl_3\)
\(2FeCl_3+Fe\rightarrow3FeCl_2\)
\(FeCl_2\underrightarrow{đpdd}Fe+Cl_2\)
\(Fe+2AgNO_3\rightarrow Fe\left(NO_3\right)_2+2Ag\)
\(b.\)
\(Fe_2O_3+6HCl\rightarrow2FeCl_3+3H_2O\)
\(FeCl_3+3NaOH\rightarrow Fe\left(OH\right)_2+3NaCl\)
\(2Fe\left(OH\right)_2+3H_2SO_4\rightarrow Fe_2\left(SO_4\right)_3+6H_2O\)
\(Fe_2\left(SO_4\right)_3+3BaCl_2\rightarrow2FeCl_3+3BaSO_4\)
Hoàn thành phương trình phản ứng theo chuỗi biên hóa sau (ghi rõ đk nếu có)
a/ MnO2 Cl2→ CuCl2→ NaCl →NAOH → NaClO -→ HC1O
b/ KMNO4→ Cl2→ HCl → KCI → KOH → KCI → Cl2→ FeCl3→ Fe(N03)3
c/ Cl2→ NaCl → AgCl → Cl2→ NaClO –→ Cl2→ CaOCl2
d/ H2 HCl - FeCl2 FeCl3→NaCl → HCI → CaCl2→ CACO3
$a) MnO_2 + 4HCl \xrightarrow{t^o} MnCl_2 + Cl_2 + 2H_2O$
$Cl_2 + Cu \xrightarrow{t^o} CuCl_2$
$CuCl_2 + 2NaOH \to Cu(OH)_2 + 2NaCl$
$2NaCl + 2H_2O \xrightarrow{đpdd, cmn} 2NaOH + H_2 + Cl_2$
$2NaOH + Cl_2 \to NaCl + NaClO + H_2O$
$NaClO + HCl \to NaCl + HClO$
b)
$2KMnO_4 + 16HCl \to 2KCl + 2MnCl_2 + 5Cl_2 + 8H_2O$
$Cl_2 + H_2 \xrightarrow{ánh\ sáng} 2HCl$
$HCl + KOH \to KCl + H_2O$
$2KCl + 2H_2O \xrightarrow{đpdd, cmn} 2KOH + H_2 + Cl_2$
$3Cl_2 + 2Fe \xrightarrow{t^o} 2FeCl_3$
$FeCl_3 + 3AgNO_3 \to Fe(NO_3)_3 + 3AgCl$
Viết các PTHH theo sơ đồ sau:
M n O 2 → C l 2 → F e C l 3 → F e ( O H ) 3 → F e C l 3 → A g C l .
Bài 2: Cho 5,6 gam Fe tác dụng hết với khí Clo (Cl2) thu được hợp chất Sắt (III) clorua (FeCl3)
a/ Tính thể tích khí Cl2 (đktc) đã tham gia phản ứng
b/ Tính khối lượng FeCl3 tạo thành sau phản ứng
Cho biết: Fe = 56; Cl = 35,5
\(n_{Fe}=\dfrac{5.6}{56}=0.1\left(mol\right)\)
\(Fe+\dfrac{3}{2}Cl_2\underrightarrow{^{^{t^0}}}FeCl_3\)
\(0.1.......0.15..........0.1\)
\(V_{Cl_2}=0.15\cdot22.4=3.36\left(l\right)\)
\(m_{FeCl_3}=0.1\cdot162.5=16.25\left(g\right)\)
Viết các phương trình phản ứng xảy ra cho sơ đồ sau:
a,MnO2→Cl2→HCl→NaCl→Cl2→H2SO4→HCl
b,PbO2→Cl2→NaCl→Cl2→FeCl3→Fe(OH)3→Fe2O3→Fe(NO3)2
VIẾT DÙM MÌNH MÌNH CẦN GẤP SÁNG NAY LÚC 8H GIÚP DÙM MÌNH
a)
\(MnO_2 + 4HCl \to MnCl_2 + Cl_2 + 2H_2O\\ Cl_2 + H_2 \xrightarrow{ánh\ sáng} 2HCl\\ NaOH + HCl \to NaCl + H_2O\\ 2NaCl \xrightarrow{đpnc} 2Na + Cl_2\\ Cl_2 + SO_2 + 2H_2O \to 2HCl + H_2SO_4\\ NaCl + H_2SO_4 \xrightarrow{t^o} NaHSO_4 + HCl\)
b)
\(PbO_2 + 4HCl \to PbCl_2 + Cl_2 + 2H_2O\\ 2Na + Cl_2 \xrightarrow{t^o} 2NaCl\\ 2NaCl \xrightarrow{đpnc} 2Na + Cl_2\\ 2Fe + 3Cl_2 \xrightarrow{t^o} 2FeCl_3\\ FeCl_3 + 3KOH \to Fe(OH)_3 + 3KCl\\ 2Fe(OH)_3 \xrightarrow{t^o} Fe_2O_3 + 3H_2O\\ Fe_2O_3 + 6HNO_3 \to 2Fe(NO_3)_3 + 3H_2O\)