CIE A Level Chemistry復習筆記5.3.1 Electrolysis
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...
CIE A Level Chemistry復習筆記5.2.5 Reaction Feasibility: Temperature Changes
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 ...
CIE A Level Chemistry復習筆記5.2.4 Reaction Feasibility
The Gibbs Equation: Reaction Feasibility The Gibbs equation can be used to calculate whether a reaction is?feasible?or not ΔG??= ΔHreaction??- TΔSsystem? When ΔG??is?negative, the reaction is?feasi...
CIE A Level Chemistry復習筆記5.2.3 Gibbs Free Energy Change & Gibbs Equation
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...
CIE A Level Chemistry復習筆記5.2.2 Calculating Entropy Changes
Calculating Entropy Changes The standard entropy change (ΔSsystem??) for a given reaction can be calculated using the standard entropies (S??) of the reactants and products The equation to calculat...
CIE A Level Chemistry復習筆記5.2.1 Entropy & Entropy Change
Defining Entropy The?entropy (S)?of a given system is the number of possible arrangements of the particles and their energy in a given system In other words, it is a measure of how?disordered?a sys...
CIE A Level Chemistry復習筆記5.1.9 Factors Affecting Enthalpy of Hydration
Enthalpy of Hydration: Ionic Charge & Radius The standard enthalpy change of hydration (ΔHhyd?) is affected by the amount that the ions are attracted to the water molecules The factors which af...
CIE A Level Chemistry復習筆記5.1.8 Energy Cycle Calculations
Energy Cycle Calculations The energy cycle involving the enthalpy change of solution (ΔHsol??), lattice energy (ΔHlatt?), and enthalpy change of hydration (ΔHhyd?) can be used to calculate the diff...
CIE A Level Chemistry復習筆記5.1.7 Constructing Energy Cycles using Enthalpy Changes & Lattice Energy
Energy Cycle Using Enthalpy Changes & Lattice Energy The standard enthalpy change of hydration (ΔHhyd?) can be calculated by constructing?energy cycles?and applying Hess’s law Energy cycle invo...
