|
|
| Author |
Message |
g-funk
Probably not a bot. Junior Member.
Joined: 09 May 2005
Posts: 3
|
 Posted: Tue May 24, 2005 3:52 am Post subject: test revision help |
 |
|
can anyone compare there answers with me on the following questions its just revision for a test and i need to amke sure i am doing htem right. cheers. my answers were a,c and d respectivily.
1) To convert 1.00 g Au3+(aq)ion into Au(s) in a 'gold-plating' process, how long must we electrolyze a solution if the current passing through the circuit is 2.00 amp?
a. 245 s
b. 0.50 s
c. 0.015 s
d. 735 s
2) An electrochemical cell of notation Pd|Pd2+ || Ni2+ |Ni has Eo = -1.45 V. If we know that the standard reduction potential of Ni2+ /Ni is Eo = -0.25 V, what is the standard reduction potential for Pd2+/Pd?
a. 1.70 V
b. -1.20 V
c. +1.20 V
d. -1.70 V
3) A spontaneous electrochemical reaction has:
a. Go = 0, Eo = 0 and K >> 1
b. Go < 0, Eo > 0 and K > 1
c. Go > 0, Eo < 0 and K < 1
d. Go > 0, Eo < 0 and K > 1
e. Go < 0, Eo = 0 and K >> 1
|
|
| Back to top |
|
 |
GCT
Member
Joined: 21 May 2005
Posts: 12
Location: Georgia
|
| Posted: Tue May 24, 2005 3:18 pm Post subject: |
|
|
| why don't you show us your work first
|
|
| Back to top |
|
|
RobJim
Senior Member
Joined: 13 Feb 2005
Posts: 320
Location: Los Angeles, CA
|
| Posted: Thu Jun 02, 2005 8:13 pm Post subject: |
|
|
| GCT wrote: |
| why don't you show us your work first |
I agree. I don't want to take the time to do these problems if I am not sure you did the same first.
|
|
| Back to top |
|
|
|
