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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...
The Gibbs Equation Gibbs free energy The feasibility of a reaction does not only depend on the entropy change of the reaction, but can also be affected by the enthalpy change Therefore, using the e...
