Bài 1:
[tex]2Ag+Cl_2\rightarrow 2AgCl\\Cu+Cl_2\rightarrow CuCl_2\\2Al+3Cl_2\rightarrow 2AlCl_3\\2Fe+3Cl_2\rightarrow 2FeCl_3\\8NH_3+3Cl_2\rightarrow 6NH_4Cl+N_2\\H_2S+Cl_2\rightarrow 2HCl+S\\4KOH+2Cl_2\overset{t^o}{\rightarrow}KClO_3+3KCl+H_2O[/tex]
Bài 2:
PTHH: [tex]2NaOH+CO_2\rightarrow Na_2CO_3+H_2O(1)\\2NaOH+SO_2\rightarrow Na_2SO_3+H_2O(2)\\2NaOH+Cl_2\rightarrow NaClO+NaCl+H_2O(3)[/tex]
Theo (1); (2) ta có: [tex]n_{NaOH/(3)}=0,4.3-1=0,2(mol)\Rightarrow n_{Cl_2}=0,1(mol)\\V_{Cl_2}=2,24(l)[/tex]
PTHH: [tex]Na_2CO_3+BaCl_2\rightarrow 2NaCl+BaCO_3(4)\\Na_2SO_3+BaCl_2\rightarrow 2NaCl+BaSO_3(5)[/tex]
Theo (4); (5); gt ta có: [tex]n_{Na_2CO_3}=n_{BaCO_3}=0,4(mol)\\n_{Na_2SO_3}=n_{BaSO_3}=0,1(mol)\\\Rightarrow m_{kettua}=...[/tex]