Balance the Redox Reaction for Cr2O7 2- + Fe2+ → Cr3+ + Fe3+

In this video I’ll walk you through the process for successfully balancing this reduction-oxidation reaction. We'll use the ion-electron method, also called the half-reaction method, to balance this reduction-oxidation reaction.

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----- Five Steps to Balance Redox Reactions ----
1) Write the oxidation numbers for each element.
2) Write the half reactions for the species of interest.
3) Balance each half-reactions for:
- atoms of interest.
- Oxygen (O) atoms by adding H2O.
- Hydrogen (H) atoms by adding H+ ions.
- electrons (charge) by adding electrons.
4) Balance the overall equation for electrons (charge).
5) Add half reactions and simplify.

Redox reactions, like Cr2O7 2- + Fe2+ Cr3+ + Fe3+ , are one of them most challenging topics in chemistry. They require careful attention to detail and a strong conceptual understanding of oxidation and reduction. To be successful:

- Check to make sure you have the equation written correctly.
- Get the oxidation numbers correct first!
- Take your time. Simple mistakes are easy to make.
- Think about what is happening and if it makes sense.
- Check your work. Are the number of atoms on each side equal? Does charge balance?

Finally, becoming proficient at balancing redox reactions requires lots and lots of practice. This is especially true because of the many steps and things to keep track of.

[sriramn]

The word needs more teachers like you this video helped me so much!

[mayukhghosh]

sir you have really helped alot . YOU made me love chemistry again
thanks you soo much sir

[natalianatalia]

helped me so much even though englishg isnt my first language, thanks a lot i"ve been trying to understand this for hours

[bobbydrake]

That absolutely helped a ton!! Thank you

[charliepeter]

Thank you so much for your wonderful explanation .It helped me alot ❤

[divyanshjaiswar]

By adding 6 electron on left side we mean that we are subtracting on the left side? Why cannot we add 6 electron on rhs to make it 12+

[AbelvascoLongwe]

Sir Why you haven't add water and hydrogen in the oxidation reaction??

[babayaga]

how to know if Cr2O7 2- becomes Cr3+ or 2CrO5?

[_risnafaqihah]

Kok agak gimana yah aku tidak mengerti bahasamu