does anyone know how to do the cr3+ concentraion on 7 b? i got (a) right, but i cant figure out how we are supposed to find the concentration cause we dont know what E is.

11/17/2005 8:18:22 PM

on the webassign that is.....

11/17/2005 8:18:53 PM

post the question

11/17/2005 9:37:06 PM

. Consider the following cell: Cr / Cr3+ (1.00 M) // Ni2+ (1.00 M) / Ni.



a) How many milligrams of Ni would be plated on the cathode if a current of 0.11 A is drawn for 2.4 hrs?

correct check mark mg Ni

b) What is [Cr3+] when [Ni2+] has dropped to 10-4 M?

[Cr3+] = wrong check mark M

c) What is the cell potential at the conditions described in Part b?

E =

11/18/2005 3:50:18 PM

Methinks a reaction table might prove salutary.

11/18/2005 5:22:56 PM

http://www.thewolfweb.com/message_topic.aspx?topic=166171&page=5#4116249

I think I did a problem similar to this when I took the class. Scroll down the thread to see explanations.

Actually, this is the exact problem. No need to scroll; thorough explanation pops up on clicked link.

[Edited on November 18, 2005 at 11:38 PM. Reason : ]

11/18/2005 11:35:20 PM

does anyone know how to do this
How grams of Cr would be deposited and how many liters of Cl2 gas would be produced at 38 oC and 2.54 atm by passing a current of 20.0 A for 21.0 hrs?

11/20/2005 8:30:28 PM

dr. warren looks like harry potter

11/21/2005 10:23:38 AM

Quote :

"Methinks a reaction table might prove salutary."

haha, oh the chem 201 threads used to make me so happy

11/21/2005 10:48:56 AM

Quote :

"haha, oh the chem 201 threads used to make me so happy"

11/21/2005 9:04:02 PM

Does anyone happen to have the correct answers to exam I alpha-version? im sure he sent them in an email but i cant find it.

12/4/2005 5:27:59 PM