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$Ba(OH)_2 + H_2SO_4 \to BaSO_4 + 2H_2O$
$Na_2CO_3 + 2HCl \to 2NaCl + CO_2 + H_2O$
$CuSO_4 + 2NaOH \to Cu(OH)_2 + Na_2SO_4$
$HCl + AgNO_3 \to AgCl + HNO_3$
a)
(1) \(Cu+2H2SO4\left(đ\right)-^{t0}->CuSO4+SO2\uparrow+2H2O\)
\(\left(2\right)CuSO4+BaCl2->CuCl2+BaSO4\downarrow\)
(3) \(CuCl2+2AgNO3->Cu\left(NO3\right)2+2AgCl\downarrow\)
(4) \(Cu\left(NO3\right)2+2NaOH->Cu\left(OH\right)2\downarrow+2NaNO3\)
(5) \(Cu\left(OH\right)2-^{t0}->CuO+H2O\)
(6) \(CuO+2HCl->CuCl2+H2O\)
(7) \(CuCl2-^{t0}->Cu+Cl2\uparrow\)
(8) \(Cu+Cl2-^{t0}->CuCl2\)
(9) \(CuCl2+2NaOh->Cu\left(OH\right)2\downarrow+2NaCl\)
b)
\(4Na+O2-^{t0}->2Na2O\)
\(Na2O+H2O->2NaOH\)
\(2NaOH+CO2->Na2CO3+H2O\)
\(Na2CO3+H2SO4->Na2SO4+CO2\uparrow+H2O\)
\(Na2SO4+BaCl2->2NaCl+BaSO4\downarrow\)
\(2NaCl+2H2O-\xrightarrow[có-màng-ngăn]{đpdd}2NaOH+Cl2\uparrow+H2\uparrow\)
\(3NaOH+H3PO4->Na3PO4+3H2O\)
a/ S -> SO2 -> SO3 -> H2SO4 -> Na2SO4
b/ Cu(OH)2 -> CuO -> Cu -> CuSO4
Na2O -> NaOH -> Na2SO3
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
1,
2Cu + O2 → 2CuO
CuO + H2SO4 → CuSO4 + H2O
CuSO4 + BaCl2 → CuCl2 + BaSO4
CuCl2 + 2AgNO3 → 2AgCl + Cu(NO3)2
Cu(NO3)2 + 2NaOH → Cu(OH)2 + 2NaNO3
Cu(OH)2 → CuO + H2O
2,
C + O2 → CO2
CO2 + C → 2CO
2CO + O2 → 2CO2
CO2 + NaOH → NaHCO3
2NaHCO3 → Na2CO3 + CO2 + H2O2
Na2CO3 + CaCl2 → 2NaCl + CaCO3
CaCO3 → CaO + CO2
3,
Cl2 + 2H2 → 2HCl
2HCl → 2H2 + Cl2
Cl2 + 2Na → 2NaCl
2NaCl → 2Na + Cl2
Cl2 + 2NaOH → NaClO + NaCl + H2O
NaClO + 2HCl → NaCl + Cl2 + H2O
4,
2H2O → 2H2 + O2
2H2 + O2 → 2H2O
2H2O + Cl2 → 2HClO + 2HCl
2HClO + 2HCl → Cl2 + 2H2O
Cl2 + 2KOH → KCl + KClO
KClO + 2HCl→ 2KCl + H2O
\(CuO+H_2SO_4\rightarrow CuSO_4+H_2O\\ CuSO_4+Ba\left(NO_3\right)_2\rightarrow BaSO_4+Cu\left(NO_3\right)_2\\ Cu\left(NO_3\right)_2+2KOH\rightarrow Cu\left(OH\right)_2+2KNO_3\\ Cu\left(OH\right)_2\rightarrow\left(t^o\right)CuO+H_2O\\ CuO+2HCl\rightarrow CuCl_2+H_2O\\ CuCl_2\rightarrow\left(t^o\right)Cu+Cl_2\)
a) Fe---->FeCl3----->Fe(OH)3----->Fe2O3----->Fe(NO3)3
2Fe + 3Cl2 -----> 2FeCl3
FeCl3 + 3NaOH -----> Fe(OH)3\(\downarrow\) + 3NaCl
2Fe(OH)3 --to--> Fe2O3 + 3H2O
Fe2O3 + 6HNO3 -----> 2Fe(NO3)3 + 3H2O
b) Cu ----->CuO----->CuCl2----->Cu(NO3)2---->Cu(OH)2
2Cu + O2 ---to--> 2CuO
CuO + 2HCl ------> CuCl2 + H2O
CuCl2 + 2AgNO3 ------> Cu(NO3)2 + 2AgCl\(\downarrow\)
Cu(NO3)2 + 2KOH ------> Cu(OH)2\(\downarrow\) + 2KNO3
a) Fe → Fe2O3 → FeCl3 → Fe(NO3)3 → Fe(OH)3
1. 4Fe + 3O2 \(\underrightarrow{to}\) 2Fe2O3
2. Fe2O3 + 6HCl → 2FeCl3 + 3H2O
3. FeCl3 + 3AgNO3 → Fe(NO3)3 + 3AgCl↓
4. Fe(NO3)3 + 3NaOH → 3NaNO3 + Fe(OH)3↓
pthh viết không đúng
a. Agno3+hcl -> Agcl+Hno3
b.Agno3+Nacl -> Agcl+Nano3
c.2Agno3 + cu -> 2ag+ Cu(No3)2
d.2Agno3+ Cu(oh)2 -> 2agoh+ Cu(NO3)2
pthh viết không đúng
a. Agno3+hcl -> Agcl+Hno3
b.Agno3+Nacl -> Agcl+Nano3
c.2Agno3 + cu -> 2ag+ Cu(No3)2
d.2Agno3+ Cu(oh)2 -> 2agoh+ Cu(NO3)2