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Cl2  + H2O  ----  HOCl + HCl
NH3 +  HOCl  ---- H2O  +  NH2Cl
NH3 + 2HOCl ----  2H2O  +  NHCl2
NH3 + 3HOCl ----  3H2O  +  NCl3

2NH2Cl + HOCl  ---- N2   +  H2O + 3HCl
NHCl2 + NHCl2 ---- N2 +  3HCl

http://www.doc88.com/p-40995457427.html
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