Edexcel A Level Chemistry:复习笔记5.2.2 pH
Defining pH The acidity of an aqueous solution depends on the number of?H+?ions in solution The?pH?is defined as: pH = -log[H+] where [H+] is the concentration of hydrogen ions in mol dm–3 S...
Edexcel A Level Chemistry:复习笔记5.2.1 Br?nsted–Lowry Acids & Bases
Br?nsted–Lowry Acid & Base Theory The Br?nsted-Lowry Theory?defines acids and bases in terms of proton transfer between chemical compounds A?Br?nsted acid?is a species that can donate a ...
Edexcel A Level Chemistry:复习笔记5.1.3 Reaction Conditions & The Equilibrium Constant
Temperature & the Equilibrium Constant Changes in temperature?change?the equilibrium constants?Kc?and?Kp For an endothermic reaction such as: ???An increase in temperature: ???[H2] and [...
Edexcel A Level Chemistry:复习笔记5.1.2 Equilbrium Constant Calculations
Equilibrium Constant Calculations Calculations involving?Kc In the equilibrium expression each figure within a square bracket represents the concentration in?mol dm-3 The?units?of?Kc?therefo...
2023年AP物理2课程报名开启！中国大陆考区报名即将截止
2023年AP物理2课程报名开启！不要错过这次的机会！AP物理2是一门以代数为基础的大学物理入门课程。学生通过探究性的研究来培养他们对物理的理解，研究主题包括：流体、热力学、电力、场和势、电路、磁性和电磁感...
2022年CAIE夏季Alevel大考成绩数据总结！
2022年AS和A-level的夏季大考成绩已经出分将近大半个月了，众多的A-level学子都用自己辛勤的付出交付了满意的答卷。 那么对于AS年级的学生而言，一份满意的成绩就意味着接下来申请大学有了有力的保障。对于A2年级...
Edexcel A Level Chemistry:复习笔记5.1.1 Deducing Kp Expressions
Kp Expressions We have seen previously that equilibrium reactions can be quantified by reference to an equilibrium expression and equilibrium constant The?equilibrium expression?links the?eq...
Edexcel A Level Chemistry:复习笔记4.2.4 Qualitative Analysis
Core Practical 7: Analysis of Inorganic and Organic Unknowns Test Tube Reactions Simple test tube reactions can be done to identify the following ions: Ammonium ions (NH4+) Halide ions (X-) ...
Edexcel A Level Chemistry:复习笔记4.2.3 Chlorination of 2-Methylpropan-2-ol
Core Practical 6: Chlorination of 2-Methylpropan-2-ol Synthesis of a haloalkane from an alcohol Measure 8 cm3?of 2-methylpropan-2-ol in a measuring cylinder Pour the 2-methylpropan-2-ol into...
