ASRJC 2. The Mole Concept, Stoichiometry and Redox Reactions

2023 JC1 H2 The Mole Concept, Stoichiometry & Redox Reactions 2023/ASRJC/Chemistry 1 Anderson Serangoon Junior College JC1 H2 Chemistry THE MOLE CONCEPT, STOICHIOMETRY & REDOX REACTIONS Learning Outcomes [the term relative formula mass or Mr will be used for ionic compounds] Candidates should be able to: (a) define the terms relative atomic, isotopic, molecular and formula mass (b) define the term mole in terms of the Avogadro constant (c) calculate the relative atomic mass of an element given the relative abundances of its isotopes (d) define the terms empirical and molecular formula (e) calculate empirical and molecular formulae using combustion data or composition by mass (f) write and/or construct balanced equations (g) perform calculations, including use of the mole concept, involving: (i) reacting masses (from formulae and equations) (ii) volumes of gases (e.g. in the burning of hydrocarbons) (iii) volumes and concentrations of solutions [when performing calculations, candidates’ answers should reflect the number of significant figures giv en or asked for in the question] (h) deduce stoichiometric relationships from calculations such as those in (g) (i) describe and explain redox processes in terms of electron transfer and/or of changes in oxid ation number (oxidation state) (j) construct redox equations using the relevant half−equations (k) Describe and explain the use of Fe 3+/Fe2+, MnO4−/Mn2+, Cr2O72−/Cr3+ and iodometric titration as examples of redox systems References 1. Chemistry for Advanced Level, Peter Cann & Peter Hughes 2. Chemistry, JGR Briggs 3. Chemistry in Context, 5th edition, Graham Hill & John Holman 4. A−Level Chemistry, Fourth Edition, E.N. Ramsden 5. Chemistry, Sixth Edition, Steven S. Zumdahl & Susan A. Zumdahl 6. Chemistry: The Molecular Nature of Matter and Change, 4th Edition, Martin S. Silberberg LECTURE SCHEDULE Lecture Content Mode of Delivery SLS Exit Quiz to be completed 1 Section 4.2 to 5.4 (pg 19 – 30) • Molecular formula • Volumetric Analysis F2F Q6 2 Section 6.1 to 6.5 (pg 34 – 41) • Redox Processes F2F Q7 3 Section 1 to 4.1 (pg 3 – 18) View the lecture videos on ASR Portal latest by 3 March 2023 (Friday). Log in to ASR Portal → Communications → Repositories → 2023 JC1 H2 Chemistry → choose “File” tab → 3. Mole Concept → Self Directed Learning Videos on Basic Mole Concept (Section 1 to Section 4.1) SDL Q1‒5 4 Section 7.1 to 7.4 (pg 42 – 49) • Redox Titrations F2F Q8 - 10

2023 JC1 H2 The Mole Concept, Stoichiometry & Redox Reactions 2023/ASRJC/Chemistry 2 TABLE OF CONTENTS Pg 1. Relative Masses of Atoms and Molecules ……...……………………………………. 3 1.1 Relative Masses of At