Question

Hoàn thành dãy PTHH theo sơ đồ sau:

1)KMnO₄→Cl₂→KClO→KCl→KOH→KBr→Br₂→I₂→KI.

2)Cl₂ →NaCl→Cl₂→CaOCl₂→CaCl₂→AgCl →Cl₂ →NaClO.

Answer 1

Câu 1 :

PTHH :

\(2KMnO_4+3H_2SO_4+10HCl\rightarrow5Cl_2+8H_2O+2MnSO_4+K_2SO_4\)

\(Cl_2+2KOH\rightarrow H_2O+KCl+KClO\)

\(KClO+2HCl\rightarrow KCl+H_2O+Cl_2\)

\(2KCl+2H_2O\rightarrow2KOH+Cl_2+H_2\)

\(C_2H_4Br_2+2KOH\rightarrow C_2H_2+2H_2O+2KBr\)

\(2KBr+Cl_2\rightarrow2KCl+Br_2\)

\(Br_2+2KI\rightarrow I_2+2KBr\)

\(I_2+2K\rightarrow2KI\)

Answer 2

PTHH :

2KMnO4+3H2SO4+10HCl→5Cl2+8H2O+2MnSO4+K2SO4

Cl2+2KOH→H2O+KCl+KClO

KClO+2HCl→KCl+H2O+Cl2

2KCl+2H2O→2KOH+Cl2+H2

C2H4Br2+2KOH→C2H2+2H2O+2KBr

2KBr+Cl2→2KCl+Br2

Br2+2KI→I2+2KBr

I2+2K→2KI

2)

Cl2+2Na--->2NaCl

2NaCl+2H2O- điện phân dd->2NaOH+H2+Cl2

Cl2+Ca(OH)2 --^30oC-->CaOCl2 +H2O

2CaOCl2

→

O2

+

2CaCl2

CaCl2 +2AgNO3-->2AgCl+Ca(NO3)2

2AgCl	→	2Ag	+	Cl2

Cl2+2NaOh-->NaCl+NaClO+H2O