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Pearson Edexcel IAL Chemistry

Unit 4: Rates, Equilibria and Further Organic Chemistry

Topic 11: Kinetics

Topic 12: Entropy and Energetics

Topic 13: Chemical Equilibria

Topic 14: Acid-base Equilibria

14.1—A Brønsted–Lowry acid is a proton donor and a Brønsted–Lowry base is a proton acceptor and that acid-base reactions involve

14.2—Identify Brønsted–Lowry conjugate acid-base pairs

14.3—Define the term ‘pH’

14.4—PH from hydrogen ion concentration

14.5—Hydrogen-ion concentration in mol dm−3 from pH using [H+] = 10^(−pH)

14.6—The difference between a strong acid and a weak acid in terms of the degree of dissociation

14.7—The pH of a strong acid

14.8—Deduce the expression for the acid dissociation constant, Ka, for a weak acid

14.9—The pH of a weak acid from Ka or pKa values, making relevant assumptions Students will not be expected to solve quadratic

14.10—Define the ionic product of water, Kw

14.11—The pH of a strong base from its concentration

14.12—Define the terms ‘pKa’ and ‘pKw’

14.13—Analyse data from the following experiments: i measuring the pH of a variety of substances

14.14—Ka for a weak acid from experimental data given the pH of a solution containing a known mass of acid

14.15—Draw and interpret titration curves

14.16—Select a suitable indicator for a titration

14.17—What is meant by the term ‘buffer solution’

14.18—The action of a buffer solution

14.19—The pH of a buffer solution given appropriate data

14.20—The concentrations of solutions required to prepare a buffer solution of a given pH

14.21—How to use a weak acid-strong base or strong acid-weak base titration curve to: i demonstrate buffer action ii determine Ka

14.22—The importance of buffer solutions in biological environments: i buffers in cells and in blood (H2CO3/HCO-3) ii in foods

14.23—CORE PRACTICAL 11 Finding the Ka value for a weak acid

Topic 15: Organic Chemistry: Carbonyls, Carboxylic Acids and Chirality

Unit 5: Transition Metals and Organic Nitrogen Chemistry

Unit 6: Practical Skills in Chemistry II

Assessed mathematical skills and measurement conventions

A-Level/Edexcel/Chemistry//A2/Concept/Unit 4: Rates, Equilibria and Further Organic Chemistry/Topic 14: Acid-base Equilibria/14.10—Define the ionic product of water, Kw

Unit 4: Rates, Equilibria and Further Organic Chemistry A2

Syllabus: 2017
Section: —
Level: A2

Exam analysis

Most tested topics

Topic 11: Kinetics
Topic 12: Entropy and Energetics
Topic 13: Chemical Equilibria
Topic 14: Acid-base Equilibria
Topic 15: Organic Chemistry: Carbonyls, Carboxylic Acids and Chirality