wiz-icon
MyQuestionIcon
MyQuestionIcon
1
You visited us 1 times! Enjoying our articles? Unlock Full Access!
Question

Calculate EoCell value of the following reactions:

Zn(s)+Cu2+(aq)Zn2+(aq)+Cu(s)

[Given: ECu2+/Cu=0.34V,EZn2+/Zn=0.76V]

A
0.42V
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
0.46V
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
0.46V
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
1.1V
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
Open in App
Solution

The correct option is C 1.1V
Given: ECu2+/Cu=0.34V,EZn2+/Zn=0.76V

Cu2+(aq)+2eCu(s);Eredn=+0.34V

Zn2+(aq)+2eZn(s);Eredn=0.76V and Eooxdn=+0.76V

In the given reaction, Cu is reduced and Zn is oxidized.

Zn(s)+Cu2+(aq)Zn2+(aq)+Cu(s)

Eo=Eooxidation+Eoreduction=0.76+0.34=1.1V

Hence, option (D) is correct.

flag
Suggest Corrections
thumbs-up
0
Join BYJU'S Learning Program
similar_icon
Related Videos
thumbnail
lock
Nernst Equation
CHEMISTRY
Watch in App
Join BYJU'S Learning Program
CrossIcon