2NO2 + Mn2++ 2H2O2NO3- + Mn+ 4H In the above reaction, the oxidation state of manganese changes from ____ TO ____ How many electrons are transferred in the reaction?

1 Answer
Apr 15, 2018

#Mn^(2+) -> Mn^0# (reduction by two electrons)
TOTAL electrons transferred:
4 (2 with N, 2 with Mn)

Explanation:

#2NO_2 + Mn^(2+) + 2H_2O -> 2NO_3^-##+ Mn + 4H^-#

Oxidation State Changes:
#N^(4+) -> N^(5+)# (oxidized by one electron)
#Mn^(2+) -> Mn^0# (reduction by two electrons)

TOTAL electrons transferred:
4

Solution becomes acidic (increased #H^-# ions).