Electrochemical Series The Eꝋ values of a species indicate how easily they can get oxidised or reduced In other words, they indicate the relative reactivity of elements, compounds and ions as oxidi...
Calculating Standard Cell Potential Once the standard electrode potentials (Eꝋ) of the half-cells are determined, the standard cell potential (Ecellꝋ) can be calculated by subtracting the less posi...
Calculations in Electrolysis Faraday’s constant can be used to calculate: The mass of a substance deposited at an electrode The volume of gas liberated at an electrode Calculating the mass of a sub...
Measuring the Standard Electrode Potential There are three different types of half-cells that can be connected to a standard hydrogen electrode A metal / metal ion half-cell A non-metal / non-metal...
Standard Electrode & Standard Cell Potentials Electrode potential The electrode (reduction) potential (E) is a value which shows how easily a substance is reduced These are demonstrated using r...
Faraday's Law The amount of substance that is formed at an electrode during electrolysis is proportional to: The amount of time where a constant current to passes The amount of electricity, in coul...
Products of Electrolysis Electrolysis is the breaking down of a compound into its elements using an electric current For example, the electrolysis of zinc chloride (ZnCl2) into its elements zinc an...
Feasibility & Temperature Changes The feasibility of a reaction can be affected by the temperature The Gibbs equation will be used to explain what will affect the feasibility of a reaction for ...
The Gibbs Equation: Reaction Feasibility The Gibbs equation can be used to calculate whether a reaction is feasible or not ΔGꝋ = ΔHreactionꝋ - TΔSsystemꝋ When ΔGꝋ is negative, the reaction is feasi...
