Half Reaction Problem: Get Help Here

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It is important to have equal amounts of O and H on both sides of the equation. Adding H2O on the left side and balancing the elements and charges will help to achieve this balance. The oxidation state of MnO4 is 7 and the oxidation state of MnO2 is 4, so three electrons are needed to reduce Mn. It is necessary to balance the electrons for both half-reactions before balancing the other elements.
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fasterthanwoo
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Thanks for the help guys.
 
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You need equal amounts of the elements O and H on both sides of the equation. Try adding H2O on the left side and balance the elements, then balance the charges.
 
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Thanks for the help guys.
 
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fasterthanwoo said:
I am still having some trouble with this.

The MnO4 is being reduced.

The oxidation state of MnO4 is 7. The oxidation state of MnO2 is 4. Therefore I need three e- to reduce?

Is it needed to have H2O on the left side of the reaction?

Thank you.

Yes. Three electrons to reduce Mn. Now balance the electrons for both half-reactions before worrying about the H's and the O's and the H2O's.
 
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Thanks for the help guys.
 
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FAQ: Half Reaction Problem: Get Help Here

What is a half reaction problem?

A half reaction problem is a type of chemistry problem that involves balancing the oxidation and reduction reactions in a redox reaction. It requires identifying the species that are oxidized and reduced, balancing the charges and mass, and ensuring that the number of electrons is equal in both the oxidation and reduction half reactions.

How do I solve a half reaction problem?

To solve a half reaction problem, you should first identify the species that are being oxidized and reduced. Then, balance the charges and mass on each side of the equation. Next, balance the number of electrons by multiplying each half reaction by a common factor. Finally, combine the two half reactions to form the overall balanced redox reaction.

What are some tips for solving half reaction problems?

Some tips for solving half reaction problems include identifying the oxidation and reduction half reactions, balancing the charges and mass on each side, ensuring the number of electrons is equal in both half reactions, and checking your work by making sure the overall equation is balanced.

Why are half reaction problems important?

Half reaction problems are important because they help us understand redox reactions and how electrons are transferred between different species. They also allow us to predict and control chemical reactions, and are essential in many industrial processes.

Can I get help with half reaction problems?

Yes, there are many resources available for getting help with half reaction problems. You can consult your textbook, attend office hours or tutoring sessions, or search online for tutorials and practice problems. Additionally, you can ask a fellow student or your teacher for assistance.

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