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a. Cu(NO3)₂ -> Cu -> CuSO4 → Cu(NO3)₂
Cu(NO3)2+Fe->Fe(NO3)2+Cu
Cu+2H2SO4đ-to>CuSO4+SO2+2H2O
CuSO4+Ba(NO3)2->BaSO4+Cu(NO3)2
b. Ca(NO3)₂ -> CaCO3 → CaSO4 -> CaSO3 -> CaO → Ca(OH)₂ → Ca(HCO3)₂
Ca(NO3)2 + Na2CO3 → CaCO3 ↓ + 2NaNO3
CaCO3+H2SO4->CaSO4+H2O+CO2
CaSO4+.....->CaSO3 ko có pứ
CaSO3-to->CaO+SO2
CaO+H2O->Ca(OH)2
Ca(OH)2+2CO2->Ca(HCO3)2
\(Cu\overset{\left(1\right)}{-->}CuO\overset{\left(2\right)}{-->}CuSO_4\overset{\left(3\right)}{-->}CuCl_2\overset{\left(4\right)}{-->}Cu\left(NO_3\right)_2\overset{\left(5\right)}{-->}Cu\left(OH\right)_2\overset{\left(6\right)}{-->}CuO\overset{\left(7\right)}{-->}Cu\)
\(\left(1\right)2Cu+O_2\overset{t^o}{--->}2CuO\)
\(\left(2\right)CuO+H_2SO_4--->CuSO_4+H_2O\)
\(\left(3\right)CuSO_4+BaCl_2--->BaSO_4\downarrow+CuCl_2\)
\(\left(4\right)CuCl_2+2AgNO_3--->2AgCl\downarrow+Cu\left(NO_3\right)_2\)
\(\left(5\right)Cu\left(NO_3\right)_2+2NaOH--->Cu\left(OH\right)_2\downarrow+2NaNO_3\)
\(\left(6\right)Cu\left(OH\right)_2\overset{t^o}{--->}CuO+H_2O\)
\(\left(7\right)CuO+H_2\overset{t^o}{--->}Cu+H_2O\)
\(2Cu+O_2\underrightarrow{t^o}2Cuo\)
\(CuO+H_2SO_4->CuSO_4+H_2O\)
\(CuSO_4+BaCl_2->BaSO_4\downarrow+CuCl_2\)
\(CuCl_2+2AgNO_3->Cu\left(NO_3\right)_2+2AgCl\downarrow\)
\(Cu\left(NO_3\right)_2+2NaOH->Cu\left(OH\right)_2\downarrow+2NaNO_3\)
\(Cu\left(OH\right)_2\underrightarrow{t^o}CuO+H_2O\)
\(CuO+H_2\underrightarrow{t^o}Cu+H_2O\)
Tham khảo
(1) 2Cu + O2 ---> 2CuO
(2) CuO + H2SO4 ---> CuSO4 + H2
(3) CuSO4 + 2NaOH ---> Cu(OH)2 + Na2SO4
(4) Cu(OH)2 + 2HCl ---> CuCl2 + 2H2O
(5) CuCl2 + 2AgNO3 ----> Cu(NO3)2 + 2AgCl
\(Cu+Cl_2\xrightarrow[]{t^0}CuCl_2\\ CuCl_2+2AgNO_3\rightarrow Cu\left(NO_3\right)_2+2AgCl\\ Cu\left(NO_3\right)_2+2KOH\rightarrow Cu\left(OH\right)_2+2KNO_3\\ Cu\left(OH\right)_2\xrightarrow[]{t^0}CuO+H_2O\\ CuO+H_2SO_4\rightarrow CuSO_4+H_2O\\ CuSO_4+Mg\rightarrow MgSO_4+Cu\)
Cu+Cl2➝CuCl2
CuCl2+2AgNO3➝Cu(NO3)2+2AgCl↓
Cu(NO3)2+2NaOH➝ Cu(OH)2↓+2NaNO3
Cu(OH)2➝CuO+H2O
CuO+H2SO4➝CuSO4+H2O
CuSO4+Mg(OH)2➝Cu(OH)2↓+MgSO4
1/ Cao + H2O------> Ca (OH)2
2/ Ca (OH)2 + Fe(NO3)2 -----> Ca (NO3)2+Fe(OH)2
3/ Ca(NO3)2 + H2SO4---> CaSO4+2HNO3
4/ CuCl2 + 2NaOH -----> Cu(OH)2+2NaCl
5/ Cu(OH)2 + Na2SO4-----> CuSO4+2NaOH
6/ CuSO4 +Ba(NO3)2 ------> Cu (NO3)2+BaSO4
7/ CuO +2HCl----> CuCl2+H2O
1. CaO + H2O = Ca(OH)2
2. Ca(OH)2 + 2HNO3 = Ca(NO3)2 + 2H2O
3. Không xảy ra pứ này
4. CuCl2 +2NaOH = 2NaCl + Cu(OH)2
5. Cu(OH)2 + H2SO4 = CuSO4 + 2H2O
6. CuSO4 + Ba(NO3)2 = Cu(NO3)2 + BaSO4
7. CuO + 2HCl = CuCl2 +H2O
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Bài của Duong Le
Thứ nhất: pt số 3 sẽ k xảy ra pứ
Thứ hai: pt số 5 sai