AQA A Level Chemistry復習筆記5.3.2 Partial Pressure
Partial Pressure The partial pressure of a gas is the pressure it exerts in a mixture of gases if it occupied the container on its own Partial pressure is given the symbol?p, so for a gas X,...
AQA A Level Chemistry復習筆記5.2.8 Rate Determining Step
Rate Determining Step 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 slowest step ...
AQA A Level Chemistry復習筆記5.2.7 Rate-Concentration Graphs
Rate-Concentration Graphs Order of reaction from initial rate The?progress?of the reaction can be followed by measuring the?initial?rates?of the reaction using various?initial concentrations...
AQA A Level Chemistry復習筆記5.2.6 Concentration-Time Graphs
Concentration-Time Graphs Order of reaction from concentration-time graphs In a?zero-order?the concentration of the reactant is inversely proportional to time This means that the?concentrati...
AQA A Level Chemistry復習筆記5.2.5 Finding Activation Energy
Finding Activation Energy Finding the Activation Energy Very often, the Arrhenius Equation is used to calculate the activation energy of a reaction Either a question will give sufficient inf...
AQA A Level Chemistry復習筆記5.2.4 The Arrhenius Equation
The Arrhenius Equation The rate equation shows how each of the reactants in a reaction effects the rate of the reaction and it includes the rate constant, k However, k only remains constant ...
AQA A Level Chemistry復習筆記5.2.3 Rate Equation Calculations
Rate Equation Calculations The?rate?constant?(k) of a reaction can be calculated using the initial rates and the rate equation Calculating the rate constant from the initial rate The reactio...
AQA A Level Chemistry復習筆記5.2.2 Deriving Rate Equations
Deducing Orders Order of reaction For the general reaction A + B →?C + D The?order of reaction?shows how the concentration of a reactant affects the rate of reaction Rate =?k?[A]m?[B]n When ...
2022年夏季A-Level&GCSE成績公布時間已確認！三大考試局秋季考試具體安排公布
2022年夏季大考，CAIE、愛德思、牛津AQA成績何時放榜？ CAIE考試局 2022年8月11日：AS&A Level成績公布 2022年8月17日：Pre-U成績公布 2022年8月18日：IGCSE和O Level成績公布 愛德思考試局 2022.8.18：IAS&a...
