AQA A Level Chemistry复习笔记5.1.6 Entropy
Entropy You may have wondered why it is that endothermic reactions occur at all, after all, what can be the driving force behind endothermic reactions if the products end up in a less stable...
AQA A Level Chemistry复习笔记5.1.5 Enthalpy of Solution & Hydration
Solution & Hydration Enthalpy of solution The standard enthalpy change of solution (ΔHsolꝋ) is the enthalpy change when 1 mole of an ionic substance dissolves in sufficient water to form...
AQA A Level Chemistry复习笔记5.1.4 Comparing Lattice Enthalpies
Comparing Lattice Enthalpies How accurate are lattice enthalpies? It is possible to calculate a theoretical value for the lattice enthalpy of an ionic solid. To do this you need to know the ...
AQA A Level Chemistry复习笔记5.1.3 Born-Haber Calculations
Calculations Using Born-Haber Cycles Once a Born-Haber cycle has been constructed, it is possible to calculate the lattice energy (ΔHlattꝋ) by applying Hess’s law and rearranging: ΔHfꝋ = ΔHa...
AQA A Level Chemistry复习笔记5.1.2 Born-Haber Cycles
Constructing Born-Haber Cycles A Born-Haber cycle is a specific application of Hess's Law for ionic compounds and enable us to calculate lattice enthalpy which cannot be found by experiment ...
如何将EPQ素材融合到PS文书中？
你知道吗？参与EPQ项目，不仅成绩好有机会降分录取，而且还可以作为素材写入PS。 关于PS的话， 只是大多数人缺乏科研经历， 所以要靠EPQ填充， 但是如果你自己背提已经很多了，也可以只一句话带过，还是可以用EPQ...
AQA A Level Chemistry复习笔记4.2.4 Testing for Organic Functional Groups
Testing for Organic Functional Groups REQUIRED PRACTICAL 6 For this practical, you need to be able to give the tests and positive results for the following functional groups: Alkenes Alcohol...
AQA A Level Chemistry复习笔记4.2.3 Distillation of a Product from a Reaction
Distillation of an Organic Product REQUIRED PRACTICAL 5 Distillation of an organic product: Distillation is a common practical completed in organic chemistry For this course, the most common...
AQA A Level Chemistry复习笔记4.2.2 Identifying Anions & Cations
Identifying Anions & Cations REQUIRED PRACTICAL 4 Test Tube Reactions Simple test tube reactions can be done to identify the following ions: Group 2 ions (M2+) Ammonium ions (NH4+) Halid...
