Question

question 12 of 30
why are the oxidation and reduction half - reactions separated in an electrochemical cell?
a. because oxidation and reduction cannot happen in the same solution
b. so that the metals produced can be collected without contamination
c. because different solutions are needed for the oxidation and reduction reactions
d. so that electricity will flow through the wire connecting the halves of the cell

Explanation:

In an electrochemical cell, separation of half - reactions creates a potential difference. This potential difference drives the flow of electrons through the external wire, generating electricity. Oxidation and reduction can occur in the same solution in some cases (so A is wrong), metal collection without contamination is not the main reason for separation (so B is wrong), and it's not about needing different solutions for the reactions themselves in terms of the fundamental reason for separation (so C is wrong).

Answer:

D. So that electricity will flow through the wire connecting the halves of the cell