泰晤士报2023年英国大学最新排名发布！
9月16日，英国杂志The Times&The Sunday Times（《泰晤士报》与《星期日泰晤士报》）发布了 Times 2023年英国大学最新排名（Good University Guide 2023）！ 图源｜the times 《泰晤士报》（The Times）是英...
Edexcel A Level Chemistry:复习笔记5.2.6 Titration Curves
Drawing & Interpreting Titration Curves During a titration a pH meter can be used and a pH curve plotted A pH curve is a graph showing how the pH of a solution changes as the acid (or ba...
Edexcel A Level Chemistry:复习笔记5.2.5 Measuring and Comparing pH
Measuring and Comparing pH Strong and weak acids The relative strengths of different acids can be determined by measuring the pH of equimolar aqueous solutions of the acids, at the same temp...
Edexcel A Level Chemistry:复习笔记5.2.4 Ionic Product of Water
Ionic Product of Water, Kw In all aqueous solutions, an equilibrium exists in water where a few water molecules dissociate into protons and hydroxide ions We can derive an equilibrium consta...
Edexcel A Level Chemistry:复习笔记5.2.3 Acid Strength
Acid Dissociation Strong acids A strong acid is an acid that dissociates almost completely in aqueous solutions HCl (hydrochloric acid), HNO3 (nitric acid) and H2SO4 (sulfuric acid) The posi...
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 Brønsted–Lowry Acids & Bases
Brønsted–Lowry Acid & Base Theory The Brønsted-Lowry Theory defines acids and bases in terms of proton transfer between chemical compounds A Brønsted acid is a species that can donate a ...
英国留学十大高就业率专业是哪些？
我们选择国际学校，更多还是为了以后出国留学，但是如今日新月异的社会趋势，选择一个适合自己的专业，更是尤为重要。下面，我们就来一起盘点看看英国留学十大高就业率专业，里面有没有你中意的那一个~ 10商务研...
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 [...
