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a) \(K_2O+H_2O->2KOH\)
b) \(2Fe+3Cl_2->2FeCl_3\)
c) \(2Al\left(OH\right)_3+3H_2SO_4->Al_2\left(SO_4\right)_3+6H_2O\)
d) \(4FeS_2+11O_2->2Fe_2O_3+8SO_2\)
e)\(2Al+6HCl->2AlCl_3+3H_2\)
f) \(2KClO_3->KCl+3O_2\)
g) \(4P+5O_2->2P_2O_5\)
h) \(3Fe+2O_2->Fe_3O_4\)
i) \(2Al+3CuSO_4->Al_2\left(SO_4\right)_3+3Cu\)
j) \(2K+2H_2O->2KOH+H_2\)
a) \(N_2+O_2\rightarrow2NO\)
\(\begin{matrix}N^0\rightarrow N^{+2}+2e\\O^0+2e\rightarrow O^{-2}\end{matrix}|\begin{matrix}\times1\\\times1\end{matrix}\)
b) \(C_2H_5OH+3O_2\rightarrow2CO_2+3H_2O\)
\(\begin{matrix}C^{-2}\rightarrow C^{+4}+6e\\O^0+2e\rightarrow O^{-2}\end{matrix}|\begin{matrix}\times1\\\times3\end{matrix}\)
c) \(CH_4+2O_2\rightarrow CO_2+2H_2O\)
\(\begin{matrix}C^{-4}\rightarrow C^{+4}+8e\\O^0+2e\rightarrow O^{-2}\end{matrix}|\begin{matrix}\times1\\\times4\end{matrix}\)
d) \(2H_2S+3O_2\rightarrow2H_2O+2SO_2\)
\(\begin{matrix}S^{-2}\rightarrow S^{+4}+6e\\O^0+2e\rightarrow O^{-2}\end{matrix}|\begin{matrix}\times1\\\times3\end{matrix}\)
e) \(4NH_3+3O_2\rightarrow2N_2+6H_2O\)
\(\begin{matrix}N^{-3}\rightarrow N^0+3e\\O^0+2e\rightarrow O^{-2}\end{matrix}|\begin{matrix}\times2\\\times3\end{matrix}\)
a)N2+O2->2NO
b)C2H5OH+3O2->2CO2+3H2O
c)CH4+2O2->CO2+2H2O
d)H2S+3/2O2->H2O+SO2 / 2H2S+3O2->2H2O+2SO2
e)2NH3+3/2O2->N2+3H2O / 4NH3+3O2->2N2+6H2O
CHÚC BN HỌC TỐT :))))
1) \(\overset{+2}{Fe}\overset{-1}{S_2}+\overset{0}{O_2}\rightarrow\overset{+3}{Fe_2}\overset{-2}{O_3}+\overset{+4}{S}\overset{-2}{O_2}\)
quá trình OXH :\(\overset{+2}{Fe}\overset{-1}{S_2}\rightarrow\overset{+3}{Fe}+\overset{+4}{2S}+11e|\times4\)
quá trình khử : \(\overset{0}{2O}+2.2e\rightarrow\overset{-2}{2O}|\times11\)
\(\Rightarrow4FeS_2+11O_2\rightarrow2Fe_2O_3+8SO_2\)2) \(\overset{+2}{Fe}\overset{-2}{S}+H\overset{+5}{N}O_3\rightarrow\overset{+3}{Fe}\left(\overset{+5}{N}O_3\right)_3+\overset{+2}{N}\overset{-2}{O}+H_2O+H_2\overset{+6}{S}O_4\)
quá trình OXH : \(\overset{+2}{Fe}\overset{-2}{S}\rightarrow\overset{+3}{Fe}+\overset{+6}{S}+9e|\times1\)
quá trình khử : \(\overset{+5}{N}+3e\rightarrow\overset{+2}{N}|\times3\)
\(\Rightarrow FeS+6HNO_3\rightarrow Fe\left(NO_3\right)_3+3NO+2H_2O+H_2SO_4\)
CÒN ĐỂ CHIỀU MK LM CHO NHA
CH4 + 2O2 -> (t°) CO2 + 2H2O
C2H2 + 2Br2 -> C2H2Br4
CH4 + Cl2 -> (askt) CH3Cl + HCl
2C2H2 + 5O2 -> (t°) 4CO2 + 2H2O
C2H4 + Br2 -> C2H4Br2
nCH2=CH2 -> (t°, p, xt) n(-CH2-CH2-)
C2H4 + 3O2 -> (t°) 2CO2 + 2H2O
Trả lời :
a) \(H_2+C_2N_2\underrightarrow{t^{\text{o}}}2HCN\)
b) \(2SO_2+O_2\underrightarrow{t^{\text{o}},\text{ xt }V_2O_5}2SO_3\)
c) \(P_4+2N_2\underrightarrow{t^{\text{o}}}4PN\)
d) \(CH_4+Cl_2\underrightarrow{\text{ánh sáng}}CH_3Cl+HCl\)
a) \(H_2+C_2N_2\underrightarrow{t^o}2HCN\)
b) \(2SO_2+O_2\underrightarrow{t^o,V_2O_5}2SO_3\)
c) \(P_4+2N_2\underrightarrow{t^o}4PN\)
d) \(CH_4+Cl_2\underrightarrow{a/s}CH_3Cl+HCl\)
Tự cân bằng nhá!
a,
\(HCl+MnO_2\rightarrow MnCl_2+Cl_2+H_2O\\
Cl_2+Fe\rightarrow FeCl_3\\
FeCl_3+NaOH\rightarrow Fe\left(OH\right)_3+NaCl\\
NaCl+H_2SO_{4\left(dn\right)}\rightarrow Na_2SO_4+HCl\\
HCl+CuO\rightarrow CuCl_2+H_2O\\
CuCl_2+AgNO_3\rightarrow Cu\left(NO_3\right)_2+AgCl\)
b,
\(KMnO_4+HCl\rightarrow KCl+MnCl_2+Cl_2+H_2O\\ Cl_2+H_2\rightarrow HCl\\ HCl+Fe\left(OH\right)_3\rightarrow FeCl_3+H_2O\\ FeCl_3+AgNO_3\rightarrow Fe\left(NO_3\right)_3+AgCl\\ AgCl-as,t^o->Ag+Cl_2\\ Cl_2+NaBr\rightarrow NaCl+Br_2\\ Br_2+NaI\rightarrow NaBr+I_2\)
c, Giống câu b 3 pt đầu
\(HCl+Fe\left(OH\right)_2\rightarrow FeCl_2+H_2O\\
FeCl_2+AgNO_3\rightarrow Fe\left(NO_3\right)_2+AgCl\\
AgCl-as,t^o->Ag+Cl_2\)
d,
\(HCl+MnO_2\rightarrow MnCl_2+Cl_2+H_2O\\
Cl_2+Fe\rightarrow FeCl_3\\
FeCl_3+NaOH\rightarrow Fe\left(OH\right)_3+NaCl\\
Fe\left(OH\right)_3+H_2SO_4\rightarrow Fe_2\left(SO_4\right)_3+H_2O\)
e,
\(HCl+MnO_2\rightarrow MnCl_2+Cl_2+H_2O\\
Cl_2+NaOH\rightarrow NaCl+NaClO+H_2O\\
NaCl+H_2SO_{4\left(dn\right)}\rightarrow Na_2SO_4+HCl\\
CuO+HCl\rightarrow CuCl_2+H_2O\\
CuCl_2+AgNO_3\rightarrow Cu\left(NO_3\right)_2+AgCl\\
AgCl-as,t^o->Ag+Cl_2\)
f,
\(MnO_2+HCl\rightarrow MnCl_2+Cl_2+H_2O\\ Cl_2+KOH-t^o->KClO_3+KCl+H_2O\\ KClO_3\rightarrow KCl+O_2\\ KCl+H_2SO_{4\left(dn\right)}\rightarrow K_2SO_4+HCl\\ HCl+MnO_2\rightarrow MnCl_2+Cl_2+H_2O\\ Ca\left(OH\right)_2+Cl_2\rightarrow CaCl_2+Ca\left(ClO\right)_2+H_2O\)
$\rm k)2KMnO_4 \xrightarrow{t^o} K_2MnO_4 + MnO_2 + O_2 \uparrow$
$\rm l)CH_4 + 2O_2 \xrightarrow{t^o} CO_2 + 2H_2O$
$\rm m)2Al + 3H_2SO_4 \rightarrow Al_2(SO_4)_3 + 3H_2 \uparrow$
$\rm n)Na_2CO_3 + CaCl_2 \rightarrow CaCO_3 \downarrow + 2NaCl$
$\rm o)2Na + 2H_2O \rightarrow 2NaOH + H_2 \uparrow$
$\rm p)CaO + 2HNO_3 \rightarrow Ca(NO_3)_2 + H_2O$
$\rm q)P_2O_5 + 3H_2O \rightarrow 2H_3PO_4$
$\rm r)Zn + 2HCl \rightarrow ZnCl_2 + H_2 \uparrow$
$\rm s)4Al + 3O_2 \xrightarrow{t^o} 2Al_2O_3$
$\rm t)Ba(OH)_2 + 2HCl \rightarrow BaCl_2 + 2H_2O$
4K + O2 --to--> 2K2O
S + O2 --to--> SO2
Mg + Cl2 --to--> MgCl2
Al2O3 + 3H2SO4 --> Al2(SO4)3 + 3H2O
Ca(NO3)2 + Na2CO3 --> CaCO3 + 2NaNO3