Edexcel A Level Chemistry:复习笔记5.5.7 Rate-Determining Steps
Deducing Rate-Determining Steps Rate-determining step & intermediates A chemical reaction can only go as fast as the slowest part of the reaction So, the rate-determining step is the slo...
Edexcel A Level Chemistry:复习笔记5.5.6 Reaction Order Graphs
Reaction Order Graphs Reaction Order Using Concentration-Time Graphs In a zero-order reaction, the concentration of the reactant is inversely proportional to time This means that the reactan...
Edexcel A Level Chemistry:复习笔记5.5.5 Continuous Monitoring Method
Continuous Monitoring Method Continuous monitoring involves collecting experimental data throughout the course of a reaction to plot a concentration-time graph Two of the most common ways to...
Edexcel A Level Chemistry:复习笔记5.5.4 Initial Rates Method
Initial Rates Methods The initial rates method determines the rate at the very start of the reaction when t = 0 The initial rate can be found by: Drawing a concentration-time graph Adding a ...
Edexcel A Level Chemistry:复习笔记5.5.3 Rates - Experimental Techniques
Rates - Experimental Techniques To measure the rate of a reaction, we need to be able to measure either how quickly the reactants are used up or how quickly the products are formed The metho...
Edexcel A Level Chemistry:复习笔记5.5.2 Rate Equations
Orders of Reaction The order of a reactant shows how the concentration of a chemical, typically a reactant, affects the rate of reaction It is the power to which the concentration of that re...
Edexcel A Level Chemistry:复习笔记5.5.1 Rates of Reaction
Rates of Reaction - Introduction The rate of reaction refers to the change in the amount or concentration of a reactant or product per unit time The units for rate of reaction are mol dm-3 s...
Edexcel A Level Chemistry:复习笔记5.4.4 Feasible Reactions
Feasible Reactions Graphing the Gibbs Equation The Gibbs equation can be expressed as the equation for a straight line ΔGꝋ = ΔHꝋ - TΔSꝋ ΔGꝋ = - ΔSꝋT + ΔHꝋ y = mx + c A graph of free energy ...
Edexcel A Level Chemistry:复习笔记5.4.3 Gibbs Free Energy
Feasibility of Reactions Gibbs free energy The feasibility of a reaction is determined by two factors The enthalpy and entropy change The two factors come together in a fundamental thermodyn...
