Acid-Base Titrations The steps involved in performing a titration and titration calculation are outlined in Topic 1.2.9 Titrations Acid-base titrations follow the same steps and are used to find th...
Neutralization A neutralisation reaction is one in which an acid (pH <7) and a base/alkali (pH >7) react together to form water (pH = 7) and a salt The proton of the acid reacts with the hydr...
Characteristic Reactions of Acids Metals and acids The typical reaction of a metal and an acid can be summarized as acid + metal → salt + hydrogen For example: 2HCl (aq) + Zn (s) → ...
Conjugate Acid-Base Pairs A Brønsted-Lowry acid is a species that can donate a proton A Brønsted-Lowry base is a species that can accept a proton In a reaction equilibrium the products are formed a...
Brønsted–Lowry Acids & Bases The Brønsted-Lowry Theory defines acids and bases in terms of proton transfer between chemical compounds A Brønsted-Lowry acid is a species that gives away a proton...
A-level人文学科重要吗？ 重要！ A-level人文学科虽然没有常规科目选的人多，但在申请大学时很多专业是有指定要求的。 A-level心理学 大学心理学学位不要求必须学习过A-level Psychology。很多专业要求一门scienc...
Catalysts & Equilibrium Changes in concentration If all other conditions stay the same, the equilibrium constant Kc is not affected by any changes in concentration of the reactants or products ...
每一位申请牛津大学physics或者physics and philosophy的学生，都必须参加物理能力测试PAT，无一例外。这是一个2小时的测试，评估学生在物理和数学方面的能力，是牛津大学与CAAT合作管理的考试。 2022年的考试日...
Le Chatelier's Principle Position of the equilibrium The position of the equilibrium refers to the relative amounts of products and reactants in an equilibrium mixture. When the position of equilib...
