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

For the cell prepared from electrode A and B, electrode A: Cr2O2−7Cr3+, E0red=+1.33V and electrode B: Fe3+Fe2+, E0red=0.77V, which of the following statement is not correct?

A
The electrons will flow from B to A (in the outer circuit) when connections are made.
No worries! We‘ve got your back. Try BYJU‘S free classes today!
B
The standard e.m.f. of the cell will be 0.56V
No worries! We‘ve got your back. Try BYJU‘S free classes today!
C
A will be positive electrode
No worries! We‘ve got your back. Try BYJU‘S free classes today!
D
Current flows from B to A in external circuit.
Right on! Give the BNAT exam to get a 100% scholarship for BYJUS courses
Open in App
Solution

The correct option is D Current flows from B to A in external circuit.
(A) The electrons will flow from B to A when
connection are made.
This statement is wrong because electrons will move
from A to B as electrons move from higher potential
+1.33V to the lower potential 0.77V.

1113888_873242_ans_0fff5c8f45e045c5b96961c41b8c3157.jpg

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