chemistry
posted by MARY .
Balance this chemical equation.
Cr2O7 2(aq) + Cu(s)> Cr3+(aq) +Cu2+aq)
I don't understand how to do this problem. Where do i begin? thank you.

Where do you start? By assigning oxidation numbers to each of the elements to determine which have changed. Here is a hint to get you started. Cr changes from +6 for EACH Cr on the left to +3 on the right. Cu changes from zero on the left to +2 on the right.
You need to learn to do these redox equations yourself. Here is a site that tells you almost anything you want to know about redox equation.
http://www.chemteam.info/Redox/Redox.html
If you have specific questions as you go through I'll be more than happy to help you through.
Respond to this Question
Similar Questions

chemistry
For the following balanced equation: 2 Ag+ (aq) + Cu(s) Cu2+ (aq) + 2 Ag(s) Which letter corresponds to the correct cell notation at standard state conditions? 
Chemistry
For the following balanced equation: 2 Ag+ (aq) + Cu(s)> Cu2+ (aq) + 2 Ag(s) Which letter corresponds to the correct cell notation at standard state conditions? 
Chemistry
For the following balanced equation: 2 Ag+ (aq) + Cu(s) > Cu2+ (aq) + 2 Ag(s) Which letter corresponds to the correct cell notation at standard state conditions? 
UCI Chemistry Webworks
For the following balanced equation: 2 Ag+ (aq) + Cu(s) <<>> Cu2+ (aq) + 2 Ag(s) Which letter corresponds to the correct cell notation at standard state conditions? 
chemistry
Fe2+(aq) + Cr2O7 2 (aq) →Fe3+(aq) + Cr3+(aq) Balance the equation by using oxidation and reduction half reactions. What is smallest possible integer coeﬃcient of Cr3+ in the combined balanced equation? 
Science
I am learning how to balance a chemical equation but I don't understand it at all. I read that in order to balance the equation, you need to find the number of atoms. How do I do that? 
chemistry  exam practice help!!
Given the table below predict the numerical value of the standard cell potential for the reaction: 2 Cr(s) + 3 Cu2+(aq) 2 Cr3+(aq) + 3 Cu(s) Half Reaction E (volts) (1) Cr3+ + 3 e Cr E= 0.74 (2) Cr3+ + e Cr2+ E=0.41 (3) Cr2O72 … 
Chemistry  Le Chatelier's Principle
Hi, I have a question regarding the following chemical equilibrium equation: 2CrO4^2 + 2H3O^+ <> Cr2O7^2 + 3H2O The question is: how would you manipulate the above equation to produce more Cr2O7^2 ions without adding any … 
Chemistry
Consider the unbalanced redox reaction: Cr2 O7 2(aq) + Cu(s) > Cr3+(aq) + Cu2+ Balance the equation in acidic solution and determine how much of a 0.850 M K2 Cr2 O7 solution is required to completely dissolve 5.25 g of Cu. 
Science
Al+(Cr2O7)2 = Al3+ + Cr3+ [al3+]=0.01M [(cr2o7)2]= 0.1M [cr3+]=0.001M find the E cell if we add Naoh to each electrode until al(oh)3 precipitates pH=8 KPT of al(oh)3=5 * 10 33 Eal=1.66 V Ecr=1.33V