Unit 4.3.1: Electrode Potentials

Electrochemical cells

________ can be made from two different metals dipped in salt solutions of their own ions (i.e.

salt bridge

The ________ allows ions to flow between the half- cells and balance the charges, completeing the circuit.

Copper

________ has a more +ve electrode potantial so is reduced.

Zinc

________ loses electrons more easily than copper so is by convention placed on the left.

Fe2+

The conversion from ________ to Fe3+ happens on the surface of the electrode.

cell potential

The ________ will always be a positive voltage because the more negative value is being subtracted from the more positive value.

Electrons

________ flow through the wire from the most reactive to the least reactive.

electrode

The reactions that occur at each ________ in a cell are reversible.

platinum electrode

A(n) ________ is used because it is inert (wont react)

Zinc

________ has a more- ve electrode potanital so is oxidised.

Cell Potential/Electromotive Force (EMF)

The voltage between two half-cells

What is used to separate different phases?

| / Vertical line

What is used to show the salt bridge?

|| / two vertical lines

What is used to separate the same phase?

, / comma