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a/ S -> SO2 -> SO3 -> H2SO4 -> Na2SO4
b/ Cu(OH)2 -> CuO -> Cu -> CuSO4
Na2O -> NaOH -> Na2SO3
\(2KMnO_4+16HCl_{đặc,nóng}\rightarrow2KCl+2MnCl_2+5Cl_2+8H_2O\\ 2Na+Cl_2\rightarrow\left(t^o\right)2NaCl\\ 2NaCl+2H_2O\rightarrow\left(dpdd.cmnx\right)2NaOH+Cl_2+H_2\\ 2NaOH+CuCl_2\rightarrow Cu\left(OH\right)_2\downarrow+2NaCl\\ Cu\left(OH\right)_2\rightarrow\left(t^o\right)CuO+H_2O\\ CuO+CO\rightarrow\left(t^o\right)Cu+CO_2\\ Cu+Cl_2\rightarrow\left(t^o\right)CuCl_2\\ CuCl_2+2AgNO_3\rightarrow Cu\left(NO_3\right)_2+2AgCl\downarrow\)
\(KMnO_4\underrightarrow{1}Cl_2\underrightarrow{2}NaCl\underrightarrow{3}NaOH\underrightarrow{4}Cu\left(OH\right)_2\underrightarrow{5}CuO\underrightarrow{6}Cu\underrightarrow{7}CuCl_2\underrightarrow{8}cu\left(NO_3\right)_2\)
(1) \(2KMnO_4+16HCl_{đặc}\rightarrow2KCl+2MnCl_2+5Cl_2+8H_2O\)
(2) \(2Na+Cl_2\underrightarrow{t^o}2NaCl\)
(3) \(2NaCl+2H_2O\xrightarrow[có.màng.ngăn]{điện.phân}2NaOH+H_2+Cl_2\)
(4) \(CuSO_4+2NaOH\rightarrow Cu\left(OH\right)_2+Na_2SO_4\)
(5) \(Cu\left(OH\right)_2\underrightarrow{t^o}CuO+H_2O\)
(6) \(CuO+H_2\underrightarrow{t^o}Cu+H_2O\)
(7) \(Cu+Cl_2\underrightarrow{t^o}CuCl_2\)
(8) \(CuCl_2+2AgNO_3\rightarrow Cu\left(NO_3\right)_2+AgCl\)
Chúc bạn học tốt
a.
\(H_2SO_4+CuO\rightarrow CuSO_4+H_2O\)
\(Cu\left(OH\right)_2\rightarrow CuO+H_2O\)
\(CuO+2HCl\rightarrow CuCl_2+H_2O\)
\(CuCl_2+2AgNO_3\rightarrow2AgCl+Cu\left(NO_3\right)_2\)
\(Cu\left(NO_3\right)_2+Mg\rightarrow Mg\left(NO_3\right)_2+Cu\)
b.
\(Ca+H_2O\rightarrow Ca\left(OH\right)_2+H_2\)
\(Ca\left(OH\right)_2+FeCl_2\rightarrow Fe\left(OH\right)_2+CaCl_2\)
\(CaCl_2+Na_2CO_3\rightarrow CaCO_3+2NaCl\)
\(2NaCl+2H_2O\underrightarrow{^{đpdd}}2NaOH+Cl_2+H_2\)
\(NaOH+SO_3\rightarrow NaHSO_4\)
c.
\(4Na+O_2\underrightarrow{^{to}}2Na_2O\)
\(Na_2O+2HCl\rightarrow2NaCl+H_2O\)
\(2NaCl+2H_2O\underrightarrow{^{đpdd}}2NaOH+Cl_2+H_2\)
\(2NaOH+SO_2\rightarrow Na_2SO_3+H_2O\)
\(Na_2SO_3+2HCl\rightarrow2NaCl+SO_2+H_2O\)
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)
(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)
\(4Na+O2-^{t0}->2Na2O\)
\(Na2O+H2O->2NaOH\)
\(2NaOH+CO2->Na2CO3+H2O\)
\(Na2CO3+H2SO4->Na2SO4+CO2\uparrow+H2O\)
\(Na2SO4+BaCl2->2NaCl+BaSO4\downarrow\)
\(2NaCl+2H2O-\xrightarrow[có-màng-ngăn]{đpdd}2NaOH+Cl2\uparrow+H2\uparrow\)
\(3NaOH+H3PO4->Na3PO4+3H2O\)