Question

In concentration cells, the electrode having more dilute solution surrounding it is considered as anode. Why is that?

Answer 1

can u elaborate a but more on this?

Answer 2

Hi! Where does the oxidation take place in a concentration cell? or What potential is the lower one?
This should lead you to the answer.

Answer 3

Oxidation takes place at anode. So how does the solution being more dilute around it be able to decide whether it is anode or cathode? and @Vincent-Lyon.Fr - welcome back :D

Answer 4

Back and off tomorrow for a whole week in Turkey :-))
If you know Nernst equation, write it down for a couple such as\[Cu ^{2+}/Cu\] or any metal ion/metal couple symbolically:\[Me ^{n+}/Me\]
You will end up with the highest potential (cathode) in the more concentrated solution.

If you do not use Nernst equation, write down:
\[Cu ^{2+}+Cu \rightarrow Cu+Cu ^{2+}\]mentally separating the left and right half-cells and find out which way the reaction will go.