Edexcel A Level Chemistry:復習筆記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:復習筆記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...
2023年AP考試報名開始！附詳細報名流程和注意事項，社會考生速來！
9月19日，美國大學理事會College Board?宣布大陸2023年AP考試報名正式開啟。在2022-23學年，大學理事會繼續與Prometric合作管理國內的AP考試報名和考務工作。 目前，2023年5月舉行的AP考試報名工作已經正式啟動，...
2023AP藝術史考試報名開啟！社會考生如何報名？
9月19日，美國大學理事會College Board?宣布大陸2023年AP考試報名正式開啟。 在2022-23學年，大學理事會繼續與Prometric合作管理國內的AP考試報名和考務工作。 2022-23學年AP藝術史考試可以正式報名了！ AP藝術史...
Edexcel A Level Chemistry:復習筆記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:復習筆記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:復習筆記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:復習筆記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:復習筆記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:復習筆記5.4.4 Feasible Reactions
Feasible Reactions Graphing the Gibbs Equation The Gibbs equation can be expressed as the equation for a straight line ΔG??= ΔH??- TΔS? ΔG??=?-?ΔS?T??+ ΔH? y = mx + c A graph of free energy ...
Edexcel A Level Chemistry:復習筆記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...
Edexcel A Level Chemistry:復習筆記5.4.2 Entropy Calculations
Total Entropy Calculations If we take the reaction between sodium and chorine, we know that this is a very exothermic reaction and also involves a decrease in entropy as a solid is produced ...
