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The ferrous oxide is the oxdant.
Fe +CuSO4---------FeSO4 +Cu.
Ag+
single replacement
The reaction is:4 Fe + 3 O2= 2 Fe2O3
The ferrous oxide is the oxdant.
AgNO3
AgNO3
Fe +CuSO4---------FeSO4 +Cu.
Fe
A. Fe^2+ ==> Fe^3+ + e- is an oxidation reactionB. Fe^3+ +e- ==> Fe^2+ is a reduction reactionC. Fe(s) ==> Fe(l) is neither an oxidation nor a reduction reaction. It is a phase change.D. Fe + 2e- ==> Fe^2+ is not a possible reaction.
Ag+
Fe
Any reaction occur.
single replacement
Fe + 3AgNO3 ==> Fe(NO3)3 plus 3Ag The oxidation number of Ag in AgNO3 (on the left side) is 1+ and in Ag (on the right side), it is zero. Thus, in this reaction, silver (Ag) has been reduced.
H2O + Fe(PO4)