MnO_4(aq) + 8H + _(aq) + 5Fe²⁺ → Mn^2+(aq) + 4H₂O_(I). The oxidation number of manganese in the above reaction changed from?

don uche

9 years ago

dont think d answer is der

heich

4 years ago

Please, I think the question is correct. It should be MnO4- to give you +7 to +2

marlianlawa

2 years ago

The Answer is +7 to +2.

What others in the comments do not understand is MnO4^-1 already has an overall charge of -1, meaning when you balance the charges and take 8 from both sides, you're left with +7.

mamama

8 years ago

true, it is from +8 to +2

King33Victor

3 weeks ago

for ur mind ba?

saucypie

2 months ago

The problem is from the question. Its supposed to be MnO4 - not MnO4
If you solve it with MnO4 - you get +7 to +2

Maco2000

5 years ago

It should be from +8 to +2

MACCIFO

1 year ago

These MnO4- at least it should have been indicated for better understanding

damlek_og

1 year ago

no clear enough

school28

2 months ago

A is the answer, because the oxidation no.of MnO4 is +7 and Mn is +2 bcos it's already has the oxidation.

fiokee001

1 year ago

it's from 8 to 2

Ufangirl

3 weeks ago

its not correct

nemerem_192

4 years ago

it should be feom +6 to +2