CIE A Level Chemistry复习笔记5.5.1 Acids & Bases
Conjugate Acids & Bases A Brønsted acid is a species that can donate a proton For example, hydrogen chloride (HCl) is a Brønsted acid as it can lose a proton to form a hydrogen (H+) and chlorid...
CIE A Level Chemistry复习笔记5.4.6 Standard Electrode Potentials: Free Energy Change
Calculating Free Energy Change Using Standard Electrode Potentials The standard free energy change can be calculated using the standard cell potential of an electrochemical cell ΔGꝋ = - n x Ecellꝋ ...
CIE A Level Chemistry复习笔记5.4.5 Nernst Equation
The Nernst Equation Under non-standard conditions, the cell potential of the half-cells is shown by the symbol Ecell The effect of changes in temperature and ion concentration on the Ecell can be d...
CIE A Level Chemistry复习笔记5.4.4 Non-Standard Conditions
Effect of Concentration on Electrode Potential Changes in temperature and concentration of aqueous ions will affect the standard electrode potential (Eꝋ) of a half-cell Under these non-standard con...
CIE A Level Chemistry复习笔记5.4.3 Electrochemical Series & Redox Equations
Electrochemical Series The Eꝋ values of a species indicate how easily they can get oxidised or reduced In other words, they indicate the relative reactivity of elements, compounds and ions as oxidi...
CIE A Level Chemistry复习笔记5.4.2 Standard Cell Potential: Calculations, Electron Flow & Feasibility
Calculating Standard Cell Potential Once the standard electrode potentials (Eꝋ) of the half-cells are determined, the standard cell potential (Ecellꝋ) can be calculated by subtracting the less posi...
CIE A Level Chemistry复习笔记5.4.1 Electrolysis: Calculations
Calculations in Electrolysis Faraday’s constant can be used to calculate: The mass of a substance deposited at an electrode The volume of gas liberated at an electrode Calculating the mass of a sub...
CIE A Level Chemistry复习笔记5.3.4 Measuring the Standard Electrode Potential
Measuring the Standard Electrode Potential There are three different types of half-cells that can be connected to a standard hydrogen electrode A metal / metal ion half-cell A non-metal / non-metal...
2026届英国本科录取进入最后阶段，最新补录信息来了
7月5日，IB成绩下发，7月6日下午英国时间12:00起，IBDP考生可以开始上网查成绩。与此同时，7月5日UCAS补录开始开放，不过7月5日开始early clearing，适用于IB和AP应届生，以及已获得最终成绩的往届生。8月18日，...
