Thực hiện chuỗi phản ứng sau, ghi rõ điều kiện phản ứng nếu có.
NaCl→Cl2→HCl→FeCl3→Fe(OH)3
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\(2NaCl\underrightarrow{\text{điện phân nóng chảy}}2Na+Cl_2\uparrow\\ H_2+Cl_2\underrightarrow{\text{ánh sáng}}2HCl\\ Fe_2O_3+6HCl\rightarrow2FeCl_3+3H_2O\\ FeCl_3+3NaOH\rightarrow Fe\left(OH\right)_3\downarrow+3NaCl\)
\(2KMnO_4+16HCl\rightarrow2KCl+2MnCl_2+5Cl_2+8H_2O\)
\(Cl_2+H_2\underrightarrow{as}2HCl\)
\(2HCl+Mg\rightarrow MgCl_2+H_2\)
\(MgCl_2+2AgNO_3\rightarrow2AgCl+Mg\left(NO_3\right)_2\)
1) 3Fe+3Cl2 -) 2FeCl3
2) FeCl3+3NaOH -) Fe(OH)3+3Nacl
3) 2Fe(OH)3 -t độ-) Fe2O3 + 3H20
4) Fe2O3+ 3H2SO4 -) Fe2(SO4)3 + 3H2O
5) Fe2(SO4)3 + 3Bacl2 -) 2FeCl3 + 3BaSO4
1/ \(H_2+S\underrightarrow{t^o}H_2S\)
\(S+Cl_2\underrightarrow{t^o}SCl_2\)
\(S+O_2\underrightarrow{t^o}SO_2\)
\(Hg+S\rightarrow HgS\)
\(Al+S\underrightarrow{t^o}Al_2S_3\)
\(Zn+S\underrightarrow{t^o}ZnS\)
\(Fe+S\underrightarrow{t^o}FeS\)
\(Ag+S\underrightarrow{t^o}Ag_2S\)
\(S+6HNO_{3\left(đ\right)}\rightarrow H_2SO_4+6NO_2+2H_2O\)
2/ \(FeS+2HCl\rightarrow FeCl_2+H_2S\)
\(2H_2S+O_2\rightarrow2H_2O+2S\)
\(S+Na\underrightarrow{t^o}Na_2S\)
\(Na_2S+Zn\left(NO_3\right)_2\rightarrow2NaNO_3+ZnS_{\downarrow}\)
\(ZnS+H_2SO_4\rightarrow ZnSO_4+H_2S\)
Bạn tham khảo nhé!
Hoàn thành các phương trình phản ứng xảy ra (nếu có, ghi rõ điều kiện)
1) 3Cl2 + 2Fe →to->...2FeCl3........
2) 2Cl2 + 2H2O → .....4HCl + O2.......
3) Cl2 + 2NaOH → ....NaClO + NaCl + H20.....
4) Fe + .....2HCl..... → FeCl2 + ......H2.......
5) 3HCl + Fe(OH)3→......FeCl3 + 3H20.............
6) KCl + AgNO3→........AgCl + KNO3................
7) 2HCl + CaCO3 →.........CaCl2 + H2CO3..............
$a) MnO_2 + 4HCl \xrightarrow{t^o} MnCl_2 + Cl_2 + 2H_2O$
$Cl_2 + Cu \xrightarrow{t^o} CuCl_2$
$CuCl_2 + 2NaOH \to Cu(OH)_2 + 2NaCl$
$2NaCl + 2H_2O \xrightarrow{đpdd, cmn} 2NaOH + H_2 + Cl_2$
$2NaOH + Cl_2 \to NaCl + NaClO + H_2O$
$NaClO + HCl \to NaCl + HClO$
b)
$2KMnO_4 + 16HCl \to 2KCl + 2MnCl_2 + 5Cl_2 + 8H_2O$
$Cl_2 + H_2 \xrightarrow{ánh\ sáng} 2HCl$
$HCl + KOH \to KCl + H_2O$
$2KCl + 2H_2O \xrightarrow{đpdd, cmn} 2KOH + H_2 + Cl_2$
$3Cl_2 + 2Fe \xrightarrow{t^o} 2FeCl_3$
$FeCl_3 + 3AgNO_3 \to Fe(NO_3)_3 + 3AgCl$
\(Cl_2+H_2\underrightarrow{as}2HCl\)
\(Na_2O+2HCl\rightarrow2NaCl+H_2O\)
\(2NaCl+2H_2O\underrightarrow{đpcmn}2NaOH+H_2+Cl_2\)
\(3NaOH+FeCl_3\rightarrow Fe\left(OH\right)_3\downarrow+3NaCl\)
\(2Fe\left(OH\right)_3\underrightarrow{t^o}Fe_2O_3+3H_2O\)
\(Fe_2O_3+3H_2\underrightarrow{t^o}2Fe+3H_2O\)
a)
\(KNO_3\underrightarrow{t^o}KNO_2+\dfrac{1}{2}O_2\uparrow\)
\(Fe+\dfrac{1}{2}O_{2\left(thiếu\right)}\underrightarrow{t^o}FeO\)
\(6FeO+O_2\underrightarrow{t^o}2Fe_3O_4\)
\(4Fe_3O_4+O_2\underrightarrow{t^o}6Fe_2O_3\)
\(Fe_2O_3+6HCl\rightarrow2FeCl_3+3H_2O\)
b)
\(KClO_3\underrightarrow{t^o}KCl+\dfrac{3}{2}O_2\uparrow\)
\(O_2+C\underrightarrow{t^o}CO_2\)
\(CO_2+CaO\rightarrow CaCO_3\)
\(CaCO_3+2HCl\rightarrow CaCl_2+H_2O+CO_2\uparrow\)
\(CaCl_2+2AgNO_3\rightarrow Ca\left(NO_3\right)_2+2AgCl\downarrow\)
\(Ca\left(NO_3\right)_2\underrightarrow{t^o}Ca\left(NO_2\right)_2+O_2\uparrow\)
c)
\(2Al_2O_3\xrightarrow[đp]{criolit}4Al+3O_2\uparrow\)
\(O_2+P\underrightarrow{t^o}P_2O_5\)
\(P_2O_5+3H_2O\rightarrow2H_3PO_4\)
\(2H_3PO_4+3Cu\left(OH\right)_2\rightarrow Cu_3\left(PO_4\right)_2+6H_2O\)
d)
\(FeS+2HCl\rightarrow FeCl_2+H_2S\uparrow\)
\(H_2S+\dfrac{1}{2}O_2\rightarrow S+H_2O\)
\(S+4Na\underrightarrow{t^o}2Na_2S\)
\(Na_2S+ZnCl_2\rightarrow2NaCl+ZnS\downarrow\)
\(ZnS+MgSO_4\rightarrow MgS\downarrow+ZnSO_4\)
\(\)
\(2NaCl\rightarrow2Na+Cl_2\)
\(Cl_2+H_2\rightarrow2HCl\)
\(6HCl+2Fe\left(OH\right)_3\rightarrow2FeCl_3+3H_2O\)