[Duzzy]

The reaction that occurs is: H+ + H2O2 + MnO4
- ® Mn^2+ + H2O + O2 (unbalanced).
The molar ratio H+/MnO4
- in the balanced equation is:
A.16/1
B. 12/1
C.6/1
D. 3/1
E. 2/1

if you balance it you'll get      6H+  +   H2O2  +  MnO4 ----> Mn^2+ 4H2O + O2


the correct answer is D 3/1

I chose C obviously. Can somebody exlplain why C is wrong and D is right?

[Hunter2]

It starts that your balance is not ok. Left side you have 5 positiv charges, right side 2.

So develop first reduction and oxidation part equations.

[Borek]

Duzzy, please read about post formatting, it doesn't take long to make your equation look correctly. And leaving out charges never helps in chemistry, quite the opposite. How would we know if you mean SO₃ or SO₃^2- if you write MnO4 when you mean MnO₄^-?

[Duzzy]

Listen, this is from a study guide that was given to me. I'm literally copying and pasting into this forum. If they made the guide correctly then maybe I wouldn't have such a problem figuring it out.

[Hunter2]

Forget the copy paste

start to write down the part equations.

MnO₄^- ==> Mn²⁺ (Reduktion)

and H₂O₂ ==> O₂ Oxidation

complete what is missing left and right, negativ charges you add e^-

[Borek]

Listen, this is from a study guide that was given to me. I'm literally copying and pasting into this forum. If they made the guide correctly then maybe I wouldn't have such a problem figuring it out.

Saying "it is all their fault" never helped anyone learn anything. If you are not interested in what you post, why should we be interested in answering?

Most likely at least part of the formatting is being lost while you are doing copy and paste. - ®  is not a   that one would expect in the reaction equation, even if in all your posts it is consistently present where the arrow should be. Also it is nothing unusual that formatting (subscripts, superscripts, bolding and so on) is lost while copy pasting text from documents to forum. That means you need to put some additional effort into your posts.