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...
又来到了一年一度的A-Level统考放榜时刻，CAIE考试局已率先放榜，全球有超过22w的AS&A2学生迎来了自己的成绩单~ 那么，今年的成绩与往年相比究竟如何呢？ 接下来就带大家先看看CAIE考试局最新发布的2022年6月...
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...
Calculating Entropy Changes The standard entropy change (ΔSsystemꝋ ) for a given reaction can be calculated using the standard entropies (Sꝋ ) of the reactants and products The equation to calculat...
