The diagram below represents a voltaic cell. In this cell, the electron flow is from ________
Cd(s) |Cd²⁺(aq) ||Fe²⁺(aq) ,Fe³⁺(aq) |Pt(s)

Question

The diagram below represents a voltaic cell. In this cell, the electron flow is from ________ Cd(s)|Cd²⁺(aq)||Fe²⁺(aq),Fe³⁺(aq)|Pt(s)

Quizplus · Accepted Answer

The electron flow in a voltaic cell is always from the anode (the electrode where oxidation occurs) to the cathode (the electrode where reduction occurs). In this given cell, Cd is the anode where it undergoes oxidation and loses electrons to form Cd2+, while Fe is the cathode where it undergoes reduction and gains electrons to form Fe2+. Therefore, the electron flow is from Cd to Fe, which is represented in choice E.

The Diagram Below Represents a Voltaic Cell