Oksidlanish-qaytarilish reaksiyalarining turlari

NO₂+H₂O-2e=NO₂+2H

 

                 Umumiy reaksiyani tuzish uchun oksidlovchi qabul qilgan va qaytaruvchi yo’qotgan elektronlar sonidan foydalanib va eng kichik ko’paytuvchiga ko’paytirib hadma had qo’shamiz.

                                                               _{-                                           -            +}

                               NO₂+H₂O -2e=NO₃+2H              5

                                                          _{-          +                  2+}                

                               MnO₄+8H+5e=Mn+4H₂O           2

                                             _{-                                     -           +                -            +            2+}