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a, \(S+O_2\underrightarrow{t^o}SO_2\)
\(2SO_2+O_2\xrightarrow[V_2O_5]{t^o}2SO_3\)
\(SO_3+H_2O\rightarrow H_2SO_4\)
\(H_2SO_4+2NaOH\rightarrow Na_2SO_4+2H_2O\)
\(Na_2SO_4+BaCl_2\rightarrow2NaCl+BaSO_{4\downarrow}\)
b, \(SO_2+Na_2O\rightarrow Na_2SO_3\)
\(Na_2SO_3+H_2SO_4\rightarrow Na_2SO_4+SO_2+H_2O\)
\(Na_2SO_4+Ba\left(OH\right)_2\rightarrow2NaOH+BaSO_{4\downarrow}\)
\(2NaOH_{\left(dư\right)}+CO_2\rightarrow Na_2CO_3+H_2O\)
c, \(CaO+CO_2\rightarrow CaCO_3\)
\(CaCO_3\underrightarrow{t^o}CaO+CO_2\)
\(CaO+H_2O\rightarrow Ca\left(OH\right)_2\)
\(Ca\left(OH\right)_{2\left(dư\right)}+CO_2\rightarrow CaCO_{3\downarrow}+H_2O\)
\(CaCO_3+H_2SO_4\rightarrow CaSO_{4\downarrow}+H_2O+CO_2\)
d, \(2Fe+3Cl_2\underrightarrow{t^o}2FeCl_3\)
\(FeCl_3+3NaOH\rightarrow Fe\left(OH\right)_{3\downarrow}+3NaCl\)
\(2Fe\left(OH\right)_3\underrightarrow{t^o}Fe_2O_3+3H_2O\)
\(Fe_2O_3+3H_2SO_{4\left(l\right)}\rightarrow Fe_2\left(SO_4\right)_3+3H_2O\)
\(Fe_2\left(SO_4\right)_3+3BaCl_2\rightarrow2FeCl_3+3BaSO_{4\downarrow}\)
e, \(Fe+2HCl\rightarrow FeCl_2+H_2\)
\(FeCl_2+2AgNO_3\rightarrow Fe\left(NO_3\right)_2+2AgCl_{\downarrow}\)
\(Fe\left(NO_3\right)_2+2NaOH\rightarrow2NaNO_3+Fe\left(OH\right)_{2\downarrow}\)
\(Fe\left(OH\right)_2+H_2SO_4\rightarrow FeSO_4+2H_2O\)
f, \(2Cu+O_2\underrightarrow{t^o}2CuO\)
\(CuO+2HCl\rightarrow CuCl_2+H_2O\)
\(CuCl_2+2NaOH\rightarrow2NaCl+Cu\left(OH\right)_{2\downarrow}\)
\(Cu\left(OH\right)_2\underrightarrow{t^o}CuO+H_2O\)
\(CuO+H_2\underrightarrow{t^o}Cu+H_2O\)
\(Cu+2H_2SO_{4\left(đ\right)}\underrightarrow{t^o}CuSO_4+SO_2+2H_2O\)
g, \(Al_2O_3\underrightarrow{đpnc}2Al+\dfrac{3}{2}O_2\)
\(2Al+6HCl\rightarrow2AlCl_3+3H_2\)
\(AlCl_3+3NaOH\rightarrow3NaCl+Al\left(OH\right)_{3\downarrow}\)
\(2NaCl+2H_2O\xrightarrow[cmn]{đpdd}2NaOH+Cl_2+H_2\)
\(2NaOH+CuSO_4\rightarrow Na_2SO_4+Cu\left(OH\right)_{2\downarrow}\)
Bạn tham khảo nhé!
a, S+O2to→SO2S+O2to→SO2
2SO2+O2to−−−→V2O52SO32SO2+O2→V2O5to2SO3
SO3+H2O→H2SO4SO3+H2O→H2SO4
H2SO4+2NaOH→Na2SO4+2H2OH2SO4+2NaOH→Na2SO4+2H2O
Na2SO4+BaCl2→2NaCl+BaSO4↓Na2SO4+BaCl2→2NaCl+BaSO4↓
b, SO2+Na2O→Na2SO3SO2+Na2O→Na2SO3
Na2SO3+H2SO4→Na2SO4+SO2+H2ONa2SO3+H2SO4→Na2SO4+SO2+H2O
Na2SO4+Ba(OH)2→2NaOH+BaSO4↓Na2SO4+Ba(OH)2→2NaOH+BaSO4↓
2NaOH(dư)+CO2→Na2CO3+H2O2NaOH(dư)+CO2→Na2CO3+H2O
c, CaO+CO2→CaCO3CaO+CO2→CaCO3
CaCO3to→CaO+CO2CaCO3to→CaO+CO2
CaO+H2O→Ca(OH)2CaO+H2O→Ca(OH)2
Ca(OH)2(dư)+CO2→CaCO3↓+H2OCa(OH)2(dư)+CO2→CaCO3↓+H2O
CaCO3+H2SO4→CaSO4↓+H2O+CO2CaCO3+H2SO4→CaSO4↓+H2O+CO2
d, 2Fe+3Cl2to→2FeCl32Fe+3Cl2to→2FeCl3
FeCl3+3NaOH→Fe(OH)3↓+3NaClFeCl3+3NaOH→Fe(OH)3↓+3NaCl
2Fe(OH)3to→Fe2O3+3H2O2Fe(OH)3to→Fe2O3+3H2O
Fe2O3+3H2SO4(l)→Fe2(SO4)3+3H2OFe2O3+3H2SO4(l)→Fe2(SO4)3+3H2O
Fe2(SO4)3+3BaCl2→2FeCl3+3BaSO4↓Fe2(SO4)3+3BaCl2→2FeCl3+3BaSO4↓
e, Fe+2HCl→FeCl2+H2Fe+2HCl→FeCl2+H2
FeCl2+2AgNO3→Fe(NO3)2+2AgCl↓FeCl2+2AgNO3→Fe(NO3)2+2AgCl↓
Fe(NO3)2+2NaOH→2NaNO3+Fe(OH)2↓Fe(NO3)2+2NaOH→2NaNO3+Fe(OH)2↓
Fe(OH)2+H2SO4→FeSO4+2H2OFe(OH)2+H2SO4→FeSO4+2H2O
f, 2Cu+O2to→2CuO2Cu+O2to→2CuO
CuO+2HCl→CuCl2+H2OCuO+2HCl→CuCl2+H2O
CuCl2+2NaOH→2NaCl+Cu(OH)2↓CuCl2+2NaOH→2NaCl+Cu(OH)2↓
Cu(OH)2to→CuO+H2OCu(OH)2to→CuO+H2O
CuO+H2to→Cu+H2OCuO+H2to→Cu+H2O
Cu+2H2SO4(đ)to→CuSO4+SO2+2H2OCu+2H2SO4(đ)to→CuSO4+SO2+2H2O
g, Al2O3đpnc−−−→2Al+32O2Al2O3đpnc→2Al+32O2
2Al+6HCl→2AlCl3+3H22Al+6HCl→2AlCl3+3H2
AlCl3+3NaOH→3NaCl+Al(OH)3↓AlCl3+3NaOH→3NaCl+Al(OH)3↓
2NaCl+2H2Ođpdd−−−→cmn2NaOH+Cl2+H22NaCl+2H2O→cmnđpdd2NaOH+Cl2+H2
2NaOH+CuSO4→Na2SO4+Cu(OH)2↓
bạn tự cân bằng nhé chứ ko lâu lắm
a) \(S+O_2-to>SO_2\)
\(SO_2+O_2-\frac{to}{xt}>SO_3\)
\(SO_3+H_2O->H_2SO_4\)
\(NaOH+H_2SO_4->Na_2SO_4+H_2O\)
\(BaCl_2+Na_2SO_4->BaSO_4+NaCl\)
a)
$2Na + 2H_2O \to 2NaOH + H_2$
$Na_2O + H_2O \to 2NaOH$
$Na_2CO_3 + Ca(OH)_2 \to CaCO_3 + 2NaOH$
$BaO + H_2O \to Ba(OH)_2$
$Ba(OH)_2 + Na_2CO_3 \to BaCO_3 + 2NaOH$
b)
$CuO + 2HCl \to CuCl_2 + H_2O$
$CuCl_2 + 2NaOH \to Cu(OH)_2 + 2NaCl$
$CuCl_2 + Ca(OH)_2 \to Cu(OH)_2 + CaCl_2$
$CuSO_4 + 2NaOH \to Cu(OH)_2 + Na_2SO_4$
$CuSO_4 + Ca(OH)_2 \to CaSO_4 + Cu(OH)_2$
$Cu(NO_3)_2 + 2NaOH \to Cu(OH)_2 + 2NaNO_3$
$Cu(NO_3)_2 + Ca(OH)_2 \to Ca(NO_3)_2 + Cu(OH)_2$
a)
2Na+2H2O→2NaOH+H22Na+2H2O→2NaOH+H2
Na2O+H2O→2NaOHNa2O+H2O→2NaOH
Na2CO3+Ca(OH)2→CaCO3+2NaOHNa2CO3+Ca(OH)2→CaCO3+2NaOH
BaO+H2O→Ba(OH)2BaO+H2O→Ba(OH)2
Ba(OH)2+Na2CO3→BaCO3+2NaOHBa(OH)2+Na2CO3→BaCO3+2NaOH
b)
CuO+2HCl→CuCl2+H2OCuO+2HCl→CuCl2+H2O
CuCl2+2NaOH→Cu(OH)2+2NaClCuCl2+2NaOH→Cu(OH)2+2NaCl
CuCl2+Ca(OH)2→Cu(OH)2+CaCl2CuCl2+Ca(OH)2→Cu(OH)2+CaCl2
CuSO4+2NaOH→Cu(OH)2+Na2SO4CuSO4+2NaOH→Cu(OH)2+Na2SO4
CuSO4+Ca(OH)2→CaSO4+Cu(OH)2CuSO4+Ca(OH)2→CaSO4+Cu(OH)2
Cu(NO3)2+2NaOH→Cu(OH)2+2NaNO3Cu(NO3)2+2NaOH→Cu(OH)2+2NaNO3
Cu(NO3)2+Ca(OH)2→Ca(NO3)2+Cu(OH)2
a, S + O2 \(\rightarrow\) SO2
2SO2 + O2 \(\rightarrow\) 2SO3
SO3 + H2O \(\rightarrow\) H2SO4
H2SO4 + Na2O \(\rightarrow\) Na2SO4 + H2O
Na2SO4 + Ba(OH)2 \(\rightarrow\)2NaOH + BaSO4
b, SO2 + Na2O \(\rightarrow\) Na2SO3
Na2SO3 + H2SO4 \(\rightarrow\) Na2SO4 + SO2 + H2O
Na2SO4 + Ba(OH)2 \(\rightarrow\)2NaOH + BaSO4
2NaOH + H2SO3 \(\rightarrow\) Na2SO3 + H2O
c, CaO + CO2 \(\rightarrow\) CaCO3
CaCO3 \(\rightarrow\) CaO + CO2
CaO + H2O \(\rightarrow\) Ca(OH)2
Ca(OH)2 + CO2 \(\rightarrow\) CaCO3 + H2O
CaCO3 + H2SO4 \(\rightarrow\) CaSO4 + CO2 + H2O
d, 2Fe + 3Cl2 \(\rightarrow\) 2FeCl3
FeCl3 +3NaOH \(\rightarrow\) Fe(OH)3 + 3NaCl
2Fe(OH)3 \(\rightarrow\) Fe2O3 +3H2O
Fe2O3 +3H2SO4\(\rightarrow\) Fe2(SO4)3 +3H2O
Fe2(SO4)3 +3BaCl2 \(\rightarrow\)2FeCl3 +3BaSO4
e, Fe +2HCl \(\rightarrow\) FeCl2 + H2
FeCl2 +2AgNO3 \(\rightarrow\) Fe(NO3)2 +2AgCl
Fe(NO3)2 +2NaOH \(\rightarrow\) Fe(OH)2 +2NaNO3
Fe(OH)2 \(\rightarrow\) FeO + H2O
FeO + H2SO4 \(\rightarrow\) FeSO4 + H2O
f, 2Cu + O2 \(\rightarrow\) 2CuO
CuO +2HCl \(\rightarrow\) CuCl2 + H2O
CuCl2 +2NaOH \(\rightarrow\) Cu(OH)2 +2NaCl
Cu(OH)2 \(\rightarrow\) CuO + H2O
CuO + CO \(\rightarrow\) Cu + CO2
Cu + AgSO4 \(\rightarrow\) CuSO4 + Ag
g,2Al2O3 \(\rightarrow\)4Al + 3O2
2Al + 6HCl \(\rightarrow\) 2AlCl3 + 3H2
AlCl3 +3NaOH \(\rightarrow\) Al(OH)3 +3NaCl
2NaCl + 2H2O \(\rightarrow\) 2NaOH + Cl2 + H2
2NaOH +CuCl2 \(\rightarrow\) Cu(OH)2 +2NaCl
Bài 1:
a) CuO + Cu → Cu2O
b) 2FeO + \(\dfrac{1}{2}\)O2 → Fe2O3
c) Fe + 2HCl → FeCl2 + H2
d) 2Na + H2SO4 → Na2SO4 + H2
e) 2NaOH + CuSO4 → Cu(OH)2 + Na2SO4
f) Na2CO3 + Ca(OH)2 → CaCO3 + 2NaOH
g)2 Fe(OH)3 → Fe2O3 + 3H2O
h) CaO + 2HNO3 → Ca(NO3)2 + H2O
i) 2Fe(OH)x + xH2SO4 → Fe2(SO4)x + 2xH2O