[amaara_nw]

i have a redox titration lab
i first have to standardize my permanganate with ferrous ammonium sulphate (Fe.(NH4)2(SO4)2.6H2O)
(first stabalized with sulphuric acid)

is this equation correct?

5Fe²⁺ + MnO₄ ^- +H⁺      5Fe³⁺ + Mn²⁺ +4H₂O
?
and whats the complete equation?

and what is the equation of the air oxidation of ferrous ion to ferric ion?

[Borek]

This is a correct skeletal equation, it just requires balancing.

and what is the equation of the air oxidation of ferrous ion to ferric ion?

That's not difficult, you should be able to solve it by yourself.

Fe²⁺ is oxidized to Fe³⁺. It happens in water. What are possible products of oxygen reduction?