Stoichiometry of Reactions - Chemistry (Undergraduate Foundation)

Master the quantitative prediction of chemical change with Stoichiometry of Reactions. This undergraduate foundation course focuses on transforming conceptual chemical reactions into balanced, calculable equations. We begin by applying the conservation of mass principle to balance equations through inspection, the algebraic method, and the oxidation number change method. Next, we simplify reactions in solution by deriving total and net ionic equations, rigorously defining redox reactions, and teaching the precise assignment of oxidation numbers. The final section culminates in balancing complex redox equations using the half-reaction (electron transfer) method in both acidic and basic media. Accurate reaction stoichiometry is the cornerstone of chemical processing, environmental analysis, and energy generation. Learners will gain the necessary computational skills to predict theoretical yields, determine limiting reagents in industrial synthesis, and analyse electrochemical processes like batteries and corrosion. Correctly balancing and interpreting chemical equations ensures laboratory safety, validates experimental results, and underpins quantitative decision-making in chemical engineering, materials science, and biochemistry. After completing this course, you will be proficient in balancing any chemical equation based on the conservation of mass; accurately converting molecular equations into total and net ionic forms; defining and identifying oxidation and reduction processes, including their agents; assigning oxidation numbers to elements in compounds; and confidently balancing complicated redox reactions in both acidic and basic solutions. The course concludes with comprehensive practice problems to cement computational accuracy in reaction stoichiometry. This course is specifically designed for undergraduate students beginning foundational Chemistry or related programmes, including Chemical Engineering, Pharmacy, and pure Sciences, where proficiency in calculating reaction quantities is mandatory. It is also an ideal, focused resource for pre-university students seeking an advanced start, or for any professional needing a rapid, expert-led review of fundamental reaction stoichiometry principles for accreditation or further study.

4 hrs

Enrolment valid for 12 months

This course is also part of the following learning track. You may join the track to gain comprehensive knowledge across related courses.

CHM 101: General Chemistry I

This learning track delivers the complete NUC CCMAS curriculum for General Chemistry I. It is a comprehensive programme designed to build a robust, university-level foundation in modern chemistry. The track systematically covers all essential topics, from atomic theory, chemical bonding, and the states of matter, to the quantitative principles of stoichiometry, equilibrium, thermodynamics, and kinetics. This programme is for first-year undergraduates in science, technology, engineering, and mathematics (STEM) faculties who are required to take CHM 101. It is also essential for any student or professional globally who needs a rigorous and complete foundation in first-year university chemistry for further study or career development. This track delivers a full skill set in chemical theory and quantitative problem-solving. Graduates will be able to determine molecular structures, calculate reaction quantities, analyse the energetics and rates of reactions, and solve complex equilibrium problems. This programme provides the non-negotiable prerequisite knowledge for all subsequent chemistry courses and for any degree in the physical sciences, engineering, or medicine.

Course Chapters

1. Balancing Chemical Equations

This chapter establishes the core skill of balancing chemical equations, which is mandatory for all quantitative chemical analysis; we apply the law of conservation of mass using three distinct, systematic methods to ensure numerical equality between reactants and products. You will master three key balancing techniques: the inspection method for simple reactions, the algebraic method for complex systems, and the oxidation number change method specifically for redox reactions.

Concept Overviews

3 Lessons

34:52

2. Redox Reactions

This chapter provides the conceptual framework for understanding reactions in solution, focusing on ionic and redox chemistry, which is vital for later electrochemistry and analysis. We systematically move from simplifying standard equations to mastering the foundational definitions and rules required to quantify electron transfer reactions. You will master four key objectives: converting molecular equations to net ionic forms; defining and distinguishing oxidation and reduction; identifying the roles of oxidizing and reducing agents; and accurately assigning oxidation numbers to atoms in any compound or ion.

Concept Overviews

4 Lessons

39:42

3. Balancing Redox Reactions

This chapter provides the necessary conceptual and computational tools to manage oxidation-reduction reactions, which underpin electrochemistry and many industrial processes. Mastering the systematic balancing of these electron-transfer reactions is essential because inspection methods are insufficient for complex redox systems. You will master four key objectives: tracking changes in oxidation state; balancing redox equations using the half-reaction (electron transfer) method; applying the specific protocols for balancing in acidic medium; and applying the conversion protocol for balancing in alkaline medium.

Concept Overviews

6 Lessons

1:03:27

4. Conclusion

This final chapter synthesises all balancing techniques and redox principles covered throughout the course. Mastery here validates your ability to resolve complex reaction stoichiometry, ensuring computational accuracy for theoretical yield predictions and industrial process modelling. You will master four objectives: integrating conservation of mass across all equation types; resolving multi-step ionic and redox problems; verifying oxidation number assignments; and demonstrating proficiency through comprehensive practice problems.

Concept Overviews

2 Lessons

17:56