viết các phương trình phản ứng sảy ra cho các sơ đồ sau :
a, FeS2-> SO2->S->H2S ->H2SO4-> HCl -> NaCl -> NaOH -> Nước gia-ven
b,(KMno4) MnO2-> Cl2 -> HCl ->H2S ->SO2 ->Na2SO3-> Na2SO4
c,NaCl->HCl-> Cl2 -> FeCl3->Fe(OH)3->Fe2(SO4)3
viết các phương trình phản ứng sảy ra cho các sơ đồ sau :
a, FeS2-> SO2->S->H2S ->H2SO4-> HCl -> NaCl -> NaOH -> Nước gia-ven
b,(KMno4) MnO2-> Cl2 -> HCl ->H2S ->SO2 ->Na2SO3-> Na2SO4
c,NaCl->HCl-> Cl2 -> FeCl3->Fe(OH)3->Fe2(SO4)3
\(\begin{array}{l} a)\\ 4Fe{S_2} + 11{O_2} \xrightarrow{t^0} 2F{e_2}{O_3} + 8S{O_2}\\ S{O_2} + 2{H_2}S \to 3S + 2{H_2}O\\ S + {H_2} \to {H_2}S\\ {H_2}S + 4B{r_2} + 4{H_2}O \to 8HBr + {H_2}S{O_4}\\ {H_2}S{O_4} + BaC{l_2} \to 2HCl + BaS{O_4}\\ HCl + NaOH \to NaCl + {H_2}O\\ 2NaCl + 2{H_2}O \xrightarrow{đpdd} 2NaOH + C{l_2} + {H_2}\\ 2NaOH + C{l_2} \to NaCl + NaClO + {H_2}O\\ b)\\ Mn{O_2} + 4HCl \to MnC{l_2} + C{l_2} + 2{H_2}O\\ C{l_2} + {H_2} \to 2HCl\\ 2HCl + CuS \to CuC{l_2} + {H_2}S\\ 2{H_2}S + 3{O_2} \xrightarrow{t^0} 2S{O_2} + 2{H_2}O\\ S{O_2} + 2NaOH \to N{a_2}S{O_3} + {H_2}O\\ N{a_2}S{O_3} + {H_2}S{O_4} \to N{a_2}S{O_4} + S{O_2} + {H_2}O\\ c)\\ 2NaCl + {H_2}S{O_4} \to 2HCl + N{a_2}S{O_4}\\ 4HCl + Mn{O_2} \to MnC{l_2} + C{l_2} + 2{H_2}O\\ 2Fe + 3C{l_2} \xrightarrow{t^0} 2FeC{l_3}\\ FeC{l_3} + 3NaOH \to 3NaCl + Fe{(OH)_3}\\ 2Fe{(OH)_3} + 3{H_2}S{O_4} \to F{e_2}{(S{O_4})_3} + 6{H_2}O \end{array}\)