\(2KMnO_4+16HCl_{đặc,nóng}\rightarrow2KCl+2MnCl_2+5Cl_2+8H_2O\\ 2Na+Cl_2\rightarrow\left(t^o\right)2NaCl\\ 2NaCl+2H_2O\rightarrow\left(dpdd.cmnx\right)2NaOH+Cl_2+H_2\\ 2NaOH+CuCl_2\rightarrow Cu\left(OH\right)_2\downarrow+2NaCl\\ Cu\left(OH\right)_2\rightarrow\left(t^o\right)CuO+H_2O\\ CuO+CO\rightarrow\left(t^o\right)Cu+CO_2\\ Cu+Cl_2\rightarrow\left(t^o\right)CuCl_2\\ CuCl_2+2AgNO_3\rightarrow Cu\left(NO_3\right)_2+2AgCl\downarrow\)
\(KMnO_4\underrightarrow{1}Cl_2\underrightarrow{2}NaCl\underrightarrow{3}NaOH\underrightarrow{4}Cu\left(OH\right)_2\underrightarrow{5}CuO\underrightarrow{6}Cu\underrightarrow{7}CuCl_2\underrightarrow{8}cu\left(NO_3\right)_2\)
(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/ S -> SO2 -> SO3 -> H2SO4 -> Na2SO4
b/ Cu(OH)2 -> CuO -> Cu -> CuSO4
Na2O -> NaOH -> Na2SO3