Homework Answers
consider the oxidation states of all elements
reactants :
Zn --> 0
Mn ---> +4
O ---> -2
N ---> -3
H ---> +1
products :
Zn ---> +2
Mn ----> +3
O ----> -2
N ----> -3
H ----> +1
now
reduction is the decrease in the oxidation number
here
Mn goes from +4 to +3
so
manganese is the element that is being reduced
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