Câu hỏi của TẠ THỊ THỦY

Câu 50:a) X1, X2 là Ca(HCO3)2, Ba(OH)2Ca(HCO3)2 + Ba(OH)2 ---> CaCO3↓ + BaCO3↓ + 2H2Ob) X3, X4 là Ca, H2OCa + 2H2O ---> Ca(OH)2 + H2c) X5, X6 là FeCl3, Na2CO32FeCl3 + 3Na2CO3 + 3H2O ---> 2Fe(OH)3↓ + 6NaCl + 3CO2↑___________________________________________________51)(1) 2Fe + 3Cl2 --to--> 2FeCl3(2) FeCl3 + 3AgNO3 ---> 3AgCl↓ + Fe(NO3)3 (3) Fe(NO3)3 + 3NaOH ---> Fe(OH)3↓ + 3NaNO3(4) 2Fe(OH)3 --to--> Fe2O3 + 3H2O(5) Fe2O3 + 3CO --to--> 2Fe + 3CO2↑(6) Fe + 3AgNO3 ---> Fe(NO3)3 + 3Ag↓(7) 2FeCl3 + 3H2SO4(đặc, nóng) ---> Fe2(SO4)3 + 6HCl(8) Fe + 2Fe(NO3)3 ---> 3Fe(NO3)2(9) Fe(OH)3 + 3HNO3 ---> Fe(NO3)3 + 3H2O(10) Fe2O3 + 6HNO3 ---> 2Fe(NO3)3 + 3H2O___________________________________________________52)a) 2Na + 2HCl ---> 2NaCl + H2\(2NaCl+2H_2O\xrightarrow[\text{có màng ngăn}]{\text{điện phân}}2NaOH+Cl_2\uparrow+H_2\uparrow\)NaOH + HNO3 ---> NaNO3 + H2OCu + 2NaNO3 + 2H2SO4 (đặc, nóng) ---> Na2SO4 + CuSO4 + 2NO2↑ + 2H2Ob) 4Na + O2 --to--> 2Na2ONa2O + H2O ---> 2NaOH2NaOH + CO2 ---> Na2CO3 + H2ONa2CO3 + CO2 + H2O ---> 2NaHCO3NaHCO3 + NaOH ---> Na2CO3 + H2ONa2CO3 + 2HCl ---> 2NaCl + CO2↑ + H2ONaCl + AgNO3 ---> AgCl↓ + NaNO3c)4FeS2 + 11O2 --to--> 2Fe2O3 + 8SO2↑\(2SO_2+O_2\xrightarrow[V_2O_5]{t^o}2SO_3\)SO3 + H2O ---> H2SO42H2SO4(đặc, nóng) + Zn ---> ZnSO4 + SO2↑ + 2H2OSO2 + Br2 + 2H2O ---> H2SO4 + 2HBrH2SO4 + Ba(OH)2 ---> BaSO4↓ + 2H2Od)4Al + 3O2 --to--> 2Al2O3\(2Al_2O_3\xrightarrow[criolit\left(Na_3AlF_6\right)]{\text{điện phân nóng chảy}}4Al+3O_2\uparrow\)2NaOH + 2Al + 2H2O ---> 2NaAlO2 + 3H2↑NaAlO2 + HCl + H2O ---> Al(OH)3↓ + NaCl2Al(OH)3 --to--> Al2O3 + 3H2OAl2O3 + 3H2SO4 ---> Al2(SO4)3 + 3H2OAl2(SO4)3 + 3BaCl2 ---> 3BaSO4↓ + 2AlCl3 \(2AlCl_3\xrightarrow[]{\text{điện phân dung dịch}}2Al+3Cl_2\uparrow\)e)Zn + 2NaOH ---> Na2ZnO2 + H2↑2Zn + O2 --to--> 2ZnOZnO + CO --to--> Zn + CO2ZnO + 2NaOH ---> Na2ZnO2 + H2O Na2ZnO2 + 4HCl(dư) ---> 2NaCl + ZnCl2 + 2H2OZnCl2 + 4NaOH(dư) ---> Na2ZnO2 + 2NaCl + 2H2OZnCl2 + 2NaOH ---> Zn(OH)2↓ + 2NaClZn(OH)2 --to--> ZnO + H2Og)\(N_2+O_2\xrightarrow[]{3000^oC}2NO\uparrow\)2NO + O2 ---> 2NO2↑4NO2 + O2 + 2H2O ---> 4HNO3 2HNO3 + CuO ---> Cu(NO3)2 + H2O3Cu + Cu(NO3)2 + 8HCl ---> 4CuCl2 + 2NO↑ + 4H2OCuCl2 + Ca(OH)2 ---> Cu(OH)2↓ + CaCl2Cu(OH)2 --to--> CuO + H2OCuO + H2 --to--> Cu + H2OCu + 2FeCl3 ---> 2FeCl2 + CuCl2 h) X là Al (1) \(2Al_2O_3\xrightarrow[criolit\left(Na_3AlF_6\right)]{\text{điện phân nóng chảy}}4Al+3O_2\uparrow\)(2) 2Al + Ca(OH)2 + 2H2O ---> Ca(AlO2)2 + 3H2↑(3) Ca(AlO2)2 + CO2 + H2O ---> CaCO3↓ + 2Al(OH)3↓ + 3H2O(4) Al(OH)3 + 3HCl ---> AlCl3 + 3H2O(5) AlCl3 + 3AgNO3 ---> 3AgCl↓ + Al(NO3)3(6) 2Al(NO3)3 + 3Mg ---> 3Mg(NO3)2 + 2Al↓Câu trả lời: Câu 50:a) X1, X2 là Ca(HCO3)2, Ba(OH)2Ca(HCO3)2 + Ba(OH)2 ---> CaCO3↓ + BaCO3↓ + 2H2Ob) X3, X4 là Ca, H2OCa + 2H2O ---> Ca(OH)2 + H2c) X5, X6 là FeCl3, Na2CO32FeCl3 + 3Na2CO3 + 3H2O ---> 2Fe(OH)3↓ + 6NaCl + 3CO2↑___________________________________________________51)(1) 2Fe + 3Cl2 --to--> 2FeCl3(2) FeCl3 + 3AgNO3 ---> 3AgCl↓ + Fe(NO3)3 (3) Fe(NO3)3 + 3NaOH ---> Fe(OH)3↓ + 3NaNO3(4) 2Fe(OH)3 --to--> Fe2O3 + 3H2O(5) Fe2O3 + 3CO --to--> 2Fe + 3CO2↑(6) Fe + 3AgNO3 ---> Fe(NO3)3 + 3Ag↓(7) 2FeCl3 + 3H2SO4(đặc, nóng) ---> Fe2(SO4)3 + 6HCl(8) Fe + 2Fe(NO3)3 ---> 3Fe(NO3)2(9) Fe(OH)3 + 3HNO3 ---> Fe(NO3)3 + 3H2O(10) Fe2O3 + 6HNO3 ---> 2Fe(NO3)3 + 3H2O___________________________________________________52)a) 2Na + 2HCl ---> 2NaCl + H2\(2NaCl+2H_2O\xrightarrow[\text{có màng ngăn}]{\text{điện phân}}2NaOH+Cl_2\uparrow+H_2\uparrow\)NaOH + HNO3 ---> NaNO3 + H2OCu + 2NaNO3 + 2H2SO4 (đặc, nóng) ---> Na2SO4 + CuSO4 + 2NO2↑ + 2H2Ob) 4Na + O2 --to--> 2Na2ONa2O + H2O ---> 2NaOH2NaOH + CO2 ---> Na2CO3 + H2ONa2CO3 + CO2 + H2O ---> 2NaHCO3NaHCO3 + NaOH ---> Na2CO3 + H2ONa2CO3 + 2HCl ---> 2NaCl + CO2↑ + H2ONaCl + AgNO3 ---> AgCl↓ + NaNO3c)4FeS2 + 11O2 --to--> 2Fe2O3 + 8SO2↑\(2SO_2+O_2\xrightarrow[V_2O_5]{t^o}2SO_3\)SO3 + H2O ---> H2SO42H2SO4(đặc, nóng) + Zn ---> ZnSO4 + SO2↑ + 2H2OSO2 + Br2 + 2H2O ---> H2SO4 + 2HBrH2SO4 + Ba(OH)2 ---> BaSO4↓ + 2H2Od)4Al + 3O2 --to--> 2Al2O3\(2Al_2O_3\xrightarrow[criolit\left(Na_3AlF_6\right)]{\text{điện phân nóng chảy}}4Al+3O_2\uparrow\)2NaOH + 2Al + 2H2O ---> 2NaAlO2 + 3H2↑NaAlO2 + HCl + H2O ---> Al(OH)3↓ + NaCl2Al(OH)3 --to--> Al2O3 + 3H2OAl2O3 + 3H2SO4 ---> Al2(SO4)3 + 3H2OAl2(SO4)3 + 3BaCl2 ---> 3BaSO4↓ + 2AlCl3 \(2AlCl_3\xrightarrow[]{\text{điện phân dung dịch}}2Al+3Cl_2\uparrow\)e)Zn + 2NaOH ---> Na2ZnO2 + H2↑2Zn + O2 --to--> 2ZnOZnO + CO --to--> Zn + CO2ZnO + 2NaOH ---> Na2ZnO2 + H2O Na2ZnO2 + 4HCl(dư) ---> 2NaCl + ZnCl2 + 2H2OZnCl2 + 4NaOH(dư) ---> Na2ZnO2 + 2NaCl + 2H2OZnCl2 + 2NaOH ---> Zn(OH)2↓ + 2NaClZn(OH)2 --to--> ZnO + H2Og)\(N_2+O_2\xrightarrow[]{3000^oC}2NO\uparrow\)2NO + O2 ---> 2NO2↑4NO2 + O2 + 2H2O ---> 4HNO3 2HNO3 + CuO ---> Cu(NO3)2 + H2O3Cu + Cu(NO3)2 + 8HCl ---> 4CuCl2 + 2NO↑ + 4H2OCuCl2 + Ca(OH)2 ---> Cu(OH)2↓ + CaCl2Cu(OH)2 --to--> CuO + H2OCuO + H2 --to--> Cu + H2OCu + 2FeCl3 ---> 2FeCl2 + CuCl2 h) X là Al (1) \(2Al_2O_3\xrightarrow[criolit\left(Na_3AlF_6\right)]{\text{điện phân nóng chảy}}4Al+3O_2\uparrow\)(2) 2Al + Ca(OH)2 + 2H2O ---> Ca(AlO2)2 + 3H2↑(3) Ca(AlO2)2 + CO2 + H2O ---> CaCO3↓ + 2Al(OH)3↓ + 3H2O(4) Al(OH)3 + 3HCl ---> AlCl3 + 3H2O(5) AlCl3 + 3AgNO3 ---> 3AgCl↓ + Al(NO3)3(6) 2Al(NO3)3 + 3Mg ---> 3Mg(NO3)2 + 2Al↓

C50 :X1 : Ba(OH)2 X2 : Ca(HCO3)2\(Ba\left(OH\right)_2+Ca\left(HCO_3\right)_2\rightarrow BaCO_3+CaCO_3+2H_2O\)X3 : Ca X4 : H2O\(Ca+2H_2O\rightarrow Ca\left(OH\right)_2+H_2\)X5 : FeCl3X6 : Na2CO3\(2FeCl_3+3Na_2CO_3+3H_2O\rightarrow2Fe\left(OH\right)_3+3CO_2+6NaCl\)51 :\(\left(1\right)2Fe+3Cl_2\underrightarrow{t^o}2FeCl_3\)\(\left(2\right)FeCl_3+3AgNO_3\rightarrow Fe\left(NO_3\right)_3+3AgCl\)\(\left(3\right)Fe\left(NO_3\right)_3+NaOH\rightarrow Fe\left(OH\right)_3+NaNO_3\)\(\left(4\right)2Fe\left(OH\right)_3\underrightarrow{t^o}Fe_2O_3+3H_2O\)\(\left(5\right)Fe_2O_3+3H_2\underrightarrow{t^o}2Fe+3H_2O\)\(\left(6\right)Fe+HNO_{3\left(đ,n\right)}\rightarrow Fe\left(NO_3\right)_3+NO_2+H_2O\)\(\left(7\right)2FeCl_3+3H_2SO_{4\left(đ,n\right)}\rightarrow Fe_2\left(SO_4\right)_3+6HCl\)\(\left(8\right)2Fe\left(NO_3\right)_3+Zn\rightarrow2Fe\left(NO_3\right)_2+Zn\left(NO_3\right)_2\)\(\left(9\right)Fe\left(OH\right)_3+3HNO_3\rightarrow Fe\left(NO_3\right)_3+H_2O\)\(\left(10\right)Fe_2O_3+HNO_3\rightarrow Fe\left(NO_3\right)_3+H_2O\)Câu trả lời: C50 :X1 : Ba(OH)2 X2 : Ca(HCO3)2\(Ba\left(OH\right)_2+Ca\left(HCO_3\right)_2\rightarrow BaCO_3+CaCO_3+2H_2O\)X3 : Ca X4 : H2O\(Ca+2H_2O\rightarrow Ca\left(OH\right)_2+H_2\)X5 : FeCl3X6 : Na2CO3\(2FeCl_3+3Na_2CO_3+3H_2O\rightarrow2Fe\left(OH\right)_3+3CO_2+6NaCl\)51 :\(\left(1\right)2Fe+3Cl_2\underrightarrow{t^o}2FeCl_3\)\(\left(2\right)FeCl_3+3AgNO_3\rightarrow Fe\left(NO_3\right)_3+3AgCl\)\(\left(3\right)Fe\left(NO_3\right)_3+NaOH\rightarrow Fe\left(OH\right)_3+NaNO_3\)\(\left(4\right)2Fe\left(OH\right)_3\underrightarrow{t^o}Fe_2O_3+3H_2O\)\(\left(5\right)Fe_2O_3+3H_2\underrightarrow{t^o}2Fe+3H_2O\)\(\left(6\right)Fe+HNO_{3\left(đ,n\right)}\rightarrow Fe\left(NO_3\right)_3+NO_2+H_2O\)\(\left(7\right)2FeCl_3+3H_2SO_{4\left(đ,n\right)}\rightarrow Fe_2\left(SO_4\right)_3+6HCl\)\(\left(8\right)2Fe\left(NO_3\right)_3+Zn\rightarrow2Fe\left(NO_3\right)_2+Zn\left(NO_3\right)_2\)\(\left(9\right)Fe\left(OH\right)_3+3HNO_3\rightarrow Fe\left(NO_3\right)_3+H_2O\)\(\left(10\right)Fe_2O_3+HNO_3\rightarrow Fe\left(NO_3\right)_3+H_2O\)

52 ) . a ) .\(2Na+2HCl\rightarrow2NaCl+H_2\)\(2NaCl+2H_2O\rightarrow2NaOH+H_2+Cl_2\)\(2NaOH_{\left(loãng\right)}+2NO_2\rightarrow NaNO_3+H_2O+NaNO_2\)\(Cu+2NaNO_3+2H_2SO_{4\left(đặc\right)}\rightarrow Na_2SO_4+CuSO_4+2NO_2+2H_2O\)\(2NO_2+2NaOH\rightarrow NaNO_3+H_2O+NaNO_2\)\(_{---------------------------------------------------}\)b ) .\(4Na+O_2\underrightarrow{t^o}2Na_2O\)\(Na_2O+H_2O\rightarrow2NaOH\)\(2NaOH+CO_2\rightarrow Na_2CO_3+H_2O\)\(Na_2CO_3+H_2O\rightarrow NaHCO_3+NaOH\)\(NaHCO_3+NaOH\rightarrow Na_2CO_3+H_2O\)\(Na_2CO_3+HCl\rightarrow NaCl+NaHCO_3\)\(NaCl+AgNO_3\rightarrow NaNO_3+AgCl\)\(_{-----------------------------------------------}\)c ) . \(FeS_2+2O_2\underrightarrow{t^o}Fe+2SO_2\)\(2SO_2+O_2\underrightarrow{t^o}2SO_3\)\(SO_3+H_2O\rightarrow H_2SO_4\)\(H_2SO_4+H_2\underrightarrow{t^o}SO_2+2H_2O\)\(2SO_2+2H_2O+O_2\underrightarrow{t^o}2H_2SO_4\)\(H_2SO_4+Ba\rightarrow BaSO_4+H_2\)\(_{------------------------------------}\)d ) . \(4Al+3O_2\underrightarrow{t^o}2Al_2O_3\)\(2Al_2O_3\underrightarrow{criolit}4Al+3O_2\)\(Al+NaO_2\rightarrow NaAlO_2\)\(NaAlO_2+H_2O+HCl\rightarrow Al\left(OH\right)_3+NaCl\)\(2Al\left(OH\right)_3\underrightarrow{t^o\left(>575^oC\right)}Al_2O_3+2H_2O\)\(Al_2O_3+2H_2SO_4\rightarrow Al_2\left(SO_4\right)_3+3H_2O\)\(Al_2\left(SO_4\right)_3+3BaCl_2\rightarrow2AlCl_3+3BaSO_4\)\(2AlCl_3+3Mg\rightarrow2Al+3MgCl_2\)\(_{-------------------------------------------------}\)e ) . \(Na_2ZnO_2+H_2\leftarrow Zn+2NaOH\)\(2Znn+O_2⇌2ZnO\)\(ZnO+2NaOH\rightarrow Na_2ZnO_2+H_2O\)điều chế ZnCl2 từ Na2ZnO2 cần 2 bước ý bn=)b1 : \(Na_2ZnO_2+CO_2+H_2O\rightarrow2NaHCO_3+Zn\left(OH\right)_2\)b2 : cho Zn ( OH)2 td vs HCl\(Zn\left(OH\right)_2+2HCl\rightarrow ZnCl_2+2H_2O\)\(ZnCl_2+2KOH\rightarrow2KCl+Zn\left(OH\right)_2\)\(Zn\left(OH\right)_2\underrightarrow{t^o\left(100-250^oC\right)}ZnO+H_2O\)\(_{---------------------------------------------}\)câu f mất tiêu hã bà :>g ) . \(N_2+O_2\underrightarrow{t^o}2NO\)\(2NO+O_2\underrightarrow{t^o}2NO_2\)\(3NO_2+H_2O\rightarrow2HNO_3+NO\)\(2HNO_3+CuO\rightarrow Cu\left(NO_3\right)_2+H_2O\)\(Cu\left(NO_3\right)_2+3Cu+8HCl\rightarrow4H_2O+2NO+4CuCl_2\)\(CuCl_2+Ca\left(OH\right)_2\rightarrow Cu\left(OH\right)_2+CaCl_2\)\(Cu\left(OH\right)_2\underrightarrow{t^o\left(40-80^oC\right)}CuO+H_2O\)\(3CuO+2Al\underrightarrow{t^o\left(ánh.sáng\right)}3Cu+Al_2O_3\) Câu trả lời: 52 ) . a ) .\(2Na+2HCl\rightarrow2NaCl+H_2\)\(2NaCl+2H_2O\rightarrow2NaOH+H_2+Cl_2\)\(2NaOH_{\left(loãng\right)}+2NO_2\rightarrow NaNO_3+H_2O+NaNO_2\)\(Cu+2NaNO_3+2H_2SO_{4\left(đặc\right)}\rightarrow Na_2SO_4+CuSO_4+2NO_2+2H_2O\)\(2NO_2+2NaOH\rightarrow NaNO_3+H_2O+NaNO_2\)\(_{---------------------------------------------------}\)b ) .\(4Na+O_2\underrightarrow{t^o}2Na_2O\)\(Na_2O+H_2O\rightarrow2NaOH\)\(2NaOH+CO_2\rightarrow Na_2CO_3+H_2O\)\(Na_2CO_3+H_2O\rightarrow NaHCO_3+NaOH\)\(NaHCO_3+NaOH\rightarrow Na_2CO_3+H_2O\)\(Na_2CO_3+HCl\rightarrow NaCl+NaHCO_3\)\(NaCl+AgNO_3\rightarrow NaNO_3+AgCl\)\(_{-----------------------------------------------}\)c ) . \(FeS_2+2O_2\underrightarrow{t^o}Fe+2SO_2\)\(2SO_2+O_2\underrightarrow{t^o}2SO_3\)\(SO_3+H_2O\rightarrow H_2SO_4\)\(H_2SO_4+H_2\underrightarrow{t^o}SO_2+2H_2O\)\(2SO_2+2H_2O+O_2\underrightarrow{t^o}2H_2SO_4\)\(H_2SO_4+Ba\rightarrow BaSO_4+H_2\)\(_{------------------------------------}\)d ) . \(4Al+3O_2\underrightarrow{t^o}2Al_2O_3\)\(2Al_2O_3\underrightarrow{criolit}4Al+3O_2\)\(Al+NaO_2\rightarrow NaAlO_2\)\(NaAlO_2+H_2O+HCl\rightarrow Al\left(OH\right)_3+NaCl\)\(2Al\left(OH\right)_3\underrightarrow{t^o\left(>575^oC\right)}Al_2O_3+2H_2O\)\(Al_2O_3+2H_2SO_4\rightarrow Al_2\left(SO_4\right)_3+3H_2O\)\(Al_2\left(SO_4\right)_3+3BaCl_2\rightarrow2AlCl_3+3BaSO_4\)\(2AlCl_3+3Mg\rightarrow2Al+3MgCl_2\)\(_{-------------------------------------------------}\)e ) . \(Na_2ZnO_2+H_2\leftarrow Zn+2NaOH\)\(2Znn+O_2⇌2ZnO\)\(ZnO+2NaOH\rightarrow Na_2ZnO_2+H_2O\)điều chế ZnCl2 từ Na2ZnO2 cần 2 bước ý bn=)b1 : \(Na_2ZnO_2+CO_2+H_2O\rightarrow2NaHCO_3+Zn\left(OH\right)_2\)b2 : cho Zn ( OH)2 td vs HCl\(Zn\left(OH\right)_2+2HCl\rightarrow ZnCl_2+2H_2O\)\(ZnCl_2+2KOH\rightarrow2KCl+Zn\left(OH\right)_2\)\(Zn\left(OH\right)_2\underrightarrow{t^o\left(100-250^oC\right)}ZnO+H_2O\)\(_{---------------------------------------------}\)câu f mất tiêu hã bà :>g ) . \(N_2+O_2\underrightarrow{t^o}2NO\)\(2NO+O_2\underrightarrow{t^o}2NO_2\)\(3NO_2+H_2O\rightarrow2HNO_3+NO\)\(2HNO_3+CuO\rightarrow Cu\left(NO_3\right)_2+H_2O\)\(Cu\left(NO_3\right)_2+3Cu+8HCl\rightarrow4H_2O+2NO+4CuCl_2\)\(CuCl_2+Ca\left(OH\right)_2\rightarrow Cu\left(OH\right)_2+CaCl_2\)\(Cu\left(OH\right)_2\underrightarrow{t^o\left(40-80^oC\right)}CuO+H_2O\)\(3CuO+2Al\underrightarrow{t^o\left(ánh.sáng\right)}3Cu+Al_2O_3\)

- Hoc24

TẠ THỊ THỦY

25 tháng 5 2022 lúc 19:31

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Lớp 8 Hóa học

Kudo Shinichi

25 tháng 5 2022 lúc 21:34

Câu 50:

a) X₁, X₂ là Ca(HCO₃)₂, Ba(OH)₂

Ca(HCO₃)₂ + Ba(OH)₂ ---> CaCO₃↓ + BaCO₃↓ + 2H₂O

b) X₃, X₄ là Ca, H₂O

Ca + 2H₂O ---> Ca(OH)₂ + H₂

c) X₅, X₆ là FeCl₃, Na₂CO₃

2FeCl₃ + 3Na₂CO₃ + 3H₂O ---> 2Fe(OH)₃↓ + 6NaCl + 3CO₂↑

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51)

(1) 2Fe + 3Cl₂ --t^o--> 2FeCl₃

(2) FeCl₃ + 3AgNO₃ ---> 3AgCl↓ + Fe(NO₃)₃

(3) Fe(NO₃)₃ + 3NaOH ---> Fe(OH)₃↓ + 3NaNO₃

(4) 2Fe(OH)₃ --t^o--> Fe₂O₃ + 3H₂O

(5) Fe₂O₃ + 3CO --t^o--> 2Fe + 3CO₂↑

(6) Fe + 3AgNO₃ ---> Fe(NO₃)₃ + 3Ag↓

(7) 2FeCl₃ + 3H₂SO_{4(đặc, nóng)} ---> Fe₂(SO₄)₃ + 6HCl

(8) Fe + 2Fe(NO₃)₃ ---> 3Fe(NO₃)₂

(9) Fe(OH)₃ + 3HNO₃ ---> Fe(NO₃)₃ + 3H₂O

(10) Fe₂O₃ + 6HNO₃ ---> 2Fe(NO₃)₃ + 3H₂O

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52)

2Na + 2HCl ---> 2NaCl + H₂

\(2NaCl+2H_2O\xrightarrow[\text{có màng ngăn}]{\text{điện phân}}2NaOH+Cl_2\uparrow+H_2\uparrow\)

NaOH + HNO₃ ---> NaNO₃ + H₂O

Cu + 2NaNO₃ + 2H₂SO_{4 (đặc, nóng)} ---> Na₂SO₄ + CuSO₄ + 2NO₂↑ + 2H₂O

4Na + O₂ --t^o--> 2Na₂O

Na₂O + H₂O ---> 2NaOH

2NaOH + CO₂ ---> Na₂CO₃ + H₂O

Na₂CO₃ + CO₂ + H₂O ---> 2NaHCO₃

NaHCO₃ + NaOH ---> Na₂CO₃ + H₂O

Na₂CO₃ + 2HCl ---> 2NaCl + CO₂↑ + H₂O

NaCl + AgNO₃ ---> AgCl↓ + NaNO₃

4FeS₂ + 11O₂ --t^o--> 2Fe₂O₃ + 8SO₂↑

\(2SO_2+O_2\xrightarrow[V_2O_5]{t^o}2SO_3\)

SO₃ + H₂O ---> H₂SO₄

2H₂SO_{4(đặc, nóng)} + Zn ---> ZnSO₄ + SO₂↑ + 2H₂O

SO₂ + Br₂ + 2H₂O ---> H₂SO₄ + 2HBr

H₂SO₄ + Ba(OH)₂ ---> BaSO₄↓ + 2H₂O

4Al + 3O₂ --t^o--> 2Al₂O₃

\(2Al_2O_3\xrightarrow[criolit\left(Na_3AlF_6\right)]{\text{điện phân nóng chảy}}4Al+3O_2\uparrow\)

2NaOH + 2Al + 2H₂O ---> 2NaAlO₂ + 3H₂↑

NaAlO₂ + HCl + H₂O ---> Al(OH)₃↓ + NaCl

2Al(OH)₃ --t^o--> Al₂O₃ + 3H₂O

Al₂O₃ + 3H₂SO₄ ---> Al₂(SO₄)₃ + 3H₂O

Al₂(SO₄)₃ + 3BaCl₂ ---> 3BaSO₄↓ + 2AlCl₃

\(2AlCl_3\xrightarrow[]{\text{điện phân dung dịch}}2Al+3Cl_2\uparrow\)

Zn + 2NaOH ---> Na₂ZnO₂ + H₂↑

2Zn + O₂ --t^o--> 2ZnO

ZnO + CO --t^o--> Zn + CO₂

ZnO + 2NaOH ---> Na₂ZnO₂ + H₂O

Na₂ZnO₂ + 4HCl_(dư) ---> 2NaCl + ZnCl₂ + 2H₂O

ZnCl₂ + 4NaOH_(dư) ---> Na₂ZnO₂ + 2NaCl + 2H₂O

ZnCl₂ + 2NaOH ---> Zn(OH)₂↓ + 2NaCl

Zn(OH)₂ --t^o--> ZnO + H₂O

\(N_2+O_2\xrightarrow[]{3000^oC}2NO\uparrow\)

2NO + O₂ ---> 2NO₂↑

4NO₂ + O₂ + 2H₂O ---> 4HNO₃

2HNO₃ + CuO ---> Cu(NO₃)₂ + H₂O

3Cu + Cu(NO₃)₂ + 8HCl ---> 4CuCl₂ + 2NO↑ + 4H₂O

CuCl₂ + Ca(OH)₂ ---> Cu(OH)₂↓ + CaCl₂

Cu(OH)₂ --t^o--> CuO + H₂O

CuO + H₂ --t^o--> Cu + H₂O

Cu + 2FeCl₃ ---> 2FeCl₂ + CuCl₂

h) X là Al

(1) \(2Al_2O_3\xrightarrow[criolit\left(Na_3AlF_6\right)]{\text{điện phân nóng chảy}}4Al+3O_2\uparrow\)

(2) 2Al + Ca(OH)₂ + 2H₂O ---> Ca(AlO₂)₂ + 3H₂↑

(3) Ca(AlO₂)₂ + CO₂ + H₂O ---> CaCO₃↓ + 2Al(OH)₃↓ + 3H₂O

(4) Al(OH)₃ + 3HCl ---> AlCl₃ + 3H₂O

(5) AlCl₃ + 3AgNO₃ ---> 3AgCl↓ + Al(NO₃)₃

(6) 2Al(NO₃)₃ + 3Mg ---> 3Mg(NO₃)₂ + 2Al↓

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Đỗ Tuệ Lâm

25 tháng 5 2022 lúc 20:30

C50 :

X1 : Ba(OH)₂

X2 : Ca(HCO₃)₂

\(Ba\left(OH\right)_2+Ca\left(HCO_3\right)_2\rightarrow BaCO_3+CaCO_3+2H_2O\)

X3 : Ca

X4 : H₂O

\(Ca+2H_2O\rightarrow Ca\left(OH\right)_2+H_2\)

X5 : FeCl₃

X6 : Na₂CO₃

\(2FeCl_3+3Na_2CO_3+3H_2O\rightarrow2Fe\left(OH\right)_3+3CO_2+6NaCl\)

51 :

\(\left(1\right)2Fe+3Cl_2\underrightarrow{t^o}2FeCl_3\)

\(\left(2\right)FeCl_3+3AgNO_3\rightarrow Fe\left(NO_3\right)_3+3AgCl\)

\(\left(3\right)Fe\left(NO_3\right)_3+NaOH\rightarrow Fe\left(OH\right)_3+NaNO_3\)

\(\left(4\right)2Fe\left(OH\right)_3\underrightarrow{t^o}Fe_2O_3+3H_2O\)

\(\left(5\right)Fe_2O_3+3H_2\underrightarrow{t^o}2Fe+3H_2O\)

\(\left(6\right)Fe+HNO_{3\left(đ,n\right)}\rightarrow Fe\left(NO_3\right)_3+NO_2+H_2O\)

\(\left(7\right)2FeCl_3+3H_2SO_{4\left(đ,n\right)}\rightarrow Fe_2\left(SO_4\right)_3+6HCl\)

\(\left(8\right)2Fe\left(NO_3\right)_3+Zn\rightarrow2Fe\left(NO_3\right)_2+Zn\left(NO_3\right)_2\)

\(\left(9\right)Fe\left(OH\right)_3+3HNO_3\rightarrow Fe\left(NO_3\right)_3+H_2O\)

\(\left(10\right)Fe_2O_3+HNO_3\rightarrow Fe\left(NO_3\right)_3+H_2O\)

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Đỗ Tuệ Lâm

25 tháng 5 2022 lúc 21:35

52 ) .

a ) .

\(2Na+2HCl\rightarrow2NaCl+H_2\)

\(2NaCl+2H_2O\rightarrow2NaOH+H_2+Cl_2\)

\(2NaOH_{\left(loãng\right)}+2NO_2\rightarrow NaNO_3+H_2O+NaNO_2\)

\(Cu+2NaNO_3+2H_2SO_{4\left(đặc\right)}\rightarrow Na_2SO_4+CuSO_4+2NO_2+2H_2O\)

\(2NO_2+2NaOH\rightarrow NaNO_3+H_2O+NaNO_2\)

\(_{---------------------------------------------------}\)

b ) .

\(4Na+O_2\underrightarrow{t^o}2Na_2O\)

\(Na_2O+H_2O\rightarrow2NaOH\)

\(2NaOH+CO_2\rightarrow Na_2CO_3+H_2O\)

\(Na_2CO_3+H_2O\rightarrow NaHCO_3+NaOH\)

\(NaHCO_3+NaOH\rightarrow Na_2CO_3+H_2O\)

\(Na_2CO_3+HCl\rightarrow NaCl+NaHCO_3\)

\(NaCl+AgNO_3\rightarrow NaNO_3+AgCl\)

\(_{-----------------------------------------------}\)

c ) .

\(FeS_2+2O_2\underrightarrow{t^o}Fe+2SO_2\)

\(2SO_2+O_2\underrightarrow{t^o}2SO_3\)

\(SO_3+H_2O\rightarrow H_2SO_4\)

\(H_2SO_4+H_2\underrightarrow{t^o}SO_2+2H_2O\)

\(2SO_2+2H_2O+O_2\underrightarrow{t^o}2H_2SO_4\)

\(H_2SO_4+Ba\rightarrow BaSO_4+H_2\)

\(_{------------------------------------}\)

d ) .

\(4Al+3O_2\underrightarrow{t^o}2Al_2O_3\)

\(2Al_2O_3\underrightarrow{criolit}4Al+3O_2\)

\(Al+NaO_2\rightarrow NaAlO_2\)

\(NaAlO_2+H_2O+HCl\rightarrow Al\left(OH\right)_3+NaCl\)

\(2Al\left(OH\right)_3\underrightarrow{t^o\left(>575^oC\right)}Al_2O_3+2H_2O\)

\(Al_2O_3+2H_2SO_4\rightarrow Al_2\left(SO_4\right)_3+3H_2O\)

\(Al_2\left(SO_4\right)_3+3BaCl_2\rightarrow2AlCl_3+3BaSO_4\)

\(2AlCl_3+3Mg\rightarrow2Al+3MgCl_2\)

\(_{-------------------------------------------------}\)

e ) .

\(Na_2ZnO_2+H_2\leftarrow Zn+2NaOH\)

\(2Znn+O_2⇌2ZnO\)

\(ZnO+2NaOH\rightarrow Na_2ZnO_2+H_2O\)

điều chế ZnCl2 từ Na2ZnO2 cần 2 bước ý bn=)

b1 : \(Na_2ZnO_2+CO_2+H_2O\rightarrow2NaHCO_3+Zn\left(OH\right)_2\)

b2 : cho Zn ( OH)2 td vs HCl

\(Zn\left(OH\right)_2+2HCl\rightarrow ZnCl_2+2H_2O\)

\(ZnCl_2+2KOH\rightarrow2KCl+Zn\left(OH\right)_2\)

\(Zn\left(OH\right)_2\underrightarrow{t^o\left(100-250^oC\right)}ZnO+H_2O\)

\(_{---------------------------------------------}\)

câu f mất tiêu hã bà :>

g ) .

\(N_2+O_2\underrightarrow{t^o}2NO\)

\(2NO+O_2\underrightarrow{t^o}2NO_2\)

\(3NO_2+H_2O\rightarrow2HNO_3+NO\)

\(2HNO_3+CuO\rightarrow Cu\left(NO_3\right)_2+H_2O\)

\(Cu\left(NO_3\right)_2+3Cu+8HCl\rightarrow4H_2O+2NO+4CuCl_2\)

\(CuCl_2+Ca\left(OH\right)_2\rightarrow Cu\left(OH\right)_2+CaCl_2\)

\(Cu\left(OH\right)_2\underrightarrow{t^o\left(40-80^oC\right)}CuO+H_2O\)

\(3CuO+2Al\underrightarrow{t^o\left(ánh.sáng\right)}3Cu+Al_2O_3\)

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Kudo Shinichi

25 tháng 5 2022 lúc 21:35

... bài dài, khó nên lần sau bạn có thể đăng 1-2 câu hỏi/lần được không?

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Kudo Shinichi

25 tháng 5 2022 lúc 21:37

Câu 50:

a) X₁, X₂ là Ca(HCO₃)₂, Ba(OH)₂

Ca(HCO₃)₂ + Ba(OH)₂ ---> CaCO₃↓ + BaCO₃↓ + 2H₂O

b) X₃, X₄ là Ca, H₂O

Ca + 2H₂O ---> Ca(OH)₂ + H₂

c) X₅, X₆ là FeCl₃, Na₂CO₃

2FeCl₃ + 3Na₂CO₃ + 3H₂O ---> 2Fe(OH)₃↓ + 6NaCl + 3CO₂↑

___________________________________________________

51)

(1) 2Fe + 3Cl₂ --t^o--> 2FeCl₃

(2) FeCl₃ + 3AgNO₃ ---> 3AgCl↓ + Fe(NO₃)₃

(3) Fe(NO₃)₃ + 3NaOH ---> Fe(OH)₃↓ + 3NaNO₃

(4) 2Fe(OH)₃ --t^o--> Fe₂O₃ + 3H₂O

(5) Fe₂O₃ + 3CO --t^o--> 2Fe + 3CO₂↑

(6) Fe + 3AgNO₃ ---> Fe(NO₃)₃ + 3Ag↓

(7) 2FeCl₃ + 3H₂SO_{4(đặc, nóng)} ---> Fe₂(SO₄)₃ + 6HCl

(8) Fe + 2Fe(NO₃)₃ ---> 3Fe(NO₃)₂

(9) Fe(OH)₃ + 3HNO₃ ---> Fe(NO₃)₃ + 3H₂O

(10) Fe₂O₃ + 6HNO₃ ---> 2Fe(NO₃)₃ + 3H₂O

___________________________________________________

52)

2Na + 2HCl ---> 2NaCl + H₂

\(2NaCl+2H_2O\xrightarrow[\text{có màng ngăn}]{\text{điện phân}}2NaOH+Cl_2\uparrow+H_2\uparrow\)

NaOH + HNO₃ ---> NaNO₃ + H₂O

Cu + 2NaNO₃ + 2H₂SO_{4 (đặc, nóng)} ---> Na₂SO₄ + CuSO₄ + 2NO₂↑ + 2H₂O

4Na + O₂ --t^o--> 2Na₂O

Na₂O + H₂O ---> 2NaOH

2NaOH + CO₂ ---> Na₂CO₃ + H₂O

Na₂CO₃ + CO₂ + H₂O ---> 2NaHCO₃

NaHCO₃ + NaOH ---> Na₂CO₃ + H₂O

Na₂CO₃ + 2HCl ---> 2NaCl + CO₂↑ + H₂O

NaCl + AgNO₃ ---> AgCl↓ + NaNO₃

4FeS₂ + 11O₂ --t^o--> 2Fe₂O₃ + 8SO₂↑

\(2SO_2+O_2\xrightarrow[V_2O_5]{t^o}2SO_3\)

SO₃ + H₂O ---> H₂SO₄

2H₂SO_{4(đặc, nóng)} + Zn ---> ZnSO₄ + SO₂↑ + 2H₂O

SO₂ + Br₂ + 2H₂O ---> H₂SO₄ + 2HBr

H₂SO₄ + Ba(OH)₂ ---> BaSO₄↓ + 2H₂O

4Al + 3O₂ --t^o--> 2Al₂O₃

\(2Al_2O_3\xrightarrow[criolit\left(Na_3AlF_6\right)]{\text{điện phân nóng chảy}}4Al+3O_2\uparrow\)

2NaOH + 2Al + 2H₂O ---> 2NaAlO₂ + 3H₂↑

NaAlO₂ + HCl + H₂O ---> Al(OH)₃↓ + NaCl

2Al(OH)₃ --t^o--> Al₂O₃ + 3H₂O

Al₂O₃ + 3H₂SO₄ ---> Al₂(SO₄)₃ + 3H₂O

Al₂(SO₄)₃ + 3BaCl₂ ---> 3BaSO₄↓ + 2AlCl₃

\(2AlCl_3\xrightarrow[]{\text{điện phân dung dịch}}2Al+3Cl_2\uparrow\)

Zn + 2NaOH ---> Na₂ZnO₂ + H₂↑

2Zn + O₂ --t^o--> 2ZnO

ZnO + CO --t^o--> Zn + CO₂

ZnO + 2NaOH ---> Na₂ZnO₂ + H₂O

Na₂ZnO₂ + 4HCl_(dư) ---> 2NaCl + ZnCl₂ + 2H₂O

ZnCl₂ + 4NaOH_(dư) ---> Na₂ZnO₂ + 2NaCl + 2H₂O

ZnCl₂ + 2NaOH ---> Zn(OH)₂↓ + 2NaCl

Zn(OH)₂ --t^o--> ZnO + H₂O

\(N_2+O_2\xrightarrow[]{3000^oC}2NO\uparrow\)

2NO + O₂ ---> 2NO₂↑

4NO₂ + O₂ + 2H₂O ---> 4HNO₃

2HNO₃ + CuO ---> Cu(NO₃)₂ + H₂O

3Cu + Cu(NO₃)₂ + 8HCl ---> 4CuCl₂ + 2NO↑ + 4H₂O

CuCl₂ + Ca(OH)₂ ---> Cu(OH)₂↓ + CaCl₂

Cu(OH)₂ --t^o--> CuO + H₂O

CuO + H₂ --t^o--> Cu + H₂O

Cu + 2FeCl₃ ---> 2FeCl₂ + CuCl₂

h) X là Zn

(1) ZnO + H₂ --t^o--> Zn + H₂O

(2) Zn + Ca(OH)₂ ---> CaZnO₂ + H₂↑

(3) CaZnO₂ + 2HCl ---> Zn(OH)₂↓ + CaCl₂

(4) Zn(OH)₂ + 2HCl ---> ZnCl₂ + 2H₂O

(5) ZnCl₂ + 2AgNO₃ ---> 2AgCl↓ + Zn(NO₃)₂

(6) Zn(NO₃)₂ + Fe ---> Fe(NO₃)₂ + Zn↓

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