Homework Help: chemistry

Posted by Mike on Monday, February 13, 2012 at 7:51pm.

In a particular redox reaction, Cr is oxidized to CrO4^2– and Cu2^+ is reduced to Cu^+ . Complete and balance the equation for this reaction in acidic solution.

Cr + Cu^2+ ---> CrO4^2-+ Cu^+

i started off by doing this

2 x SO3^2- ---> SO4^2- + 2e
2 x Cu^2+ +2e ---> Cu^+
_____________________________
2SO3^2- ---> 2SO4^2- +4e
2Cu^2+ + 4e ----> 2Cu^+

the 4e cancel out and we got

2SO3^2- +2Cu^+ ----> 2SO4^2- + 2Cu^+

Please tell me if i did the process the wrong way. The prof hasnt started this topic but i just wanted to try it out.

chemistry - DrBob222, Monday, February 13, 2012 at 7:59pm
I can tell you with some assurance that you will never balance chromate by using sulfite to sulfate. Here is a web site that will help you.
http://www.chemteam.info/Redox/Redox.html
chemistry - Mike, Monday, February 13, 2012 at 8:00pm
oh no i messed up ! i wrote the wrong elements -_-'' im sorry.And thanks for the website!

Answer this Question

Related Questions

chemistry - In a particular redox reaction, Cr is oxidized to CrO42– and ...
chemistry - For a particular redox reaction NO is oxidized to NO3^– and Cu^...
chemistry - here is a redox reaction Fe+ Cu2+„³ Fe2+ Cu Is Fe oxidized...
Chemistry - In a particular redox reaction, BrO– is oxidized to BrO3– ...
chemistry - exam practice help!! - Given the table below predict the numerical ...
chemistry - assuming the following reaction proceeds in the forward direction, ...
Chemistry - If you put a piece of iron in an aqueous solution of blue Cu2+ ions ...
Chemistry - For the following balanced equation: 2 Ag+ (aq) + Cu(s) Cu2+ (aq...
chemistry - For the following balanced equation: 2 Ag+ (aq) + Cu(s) Cu2+ (aq...
Grade. 12 Chem - Please check my answer! - Determine whether the following are ...

For Further Reading

First Name:
School Subject:
Answer: