Many students in my weekly JC1 GCE A-Level H2 Chemistry Tuition Classes in Singapore told me that they are struggling to understand the concepts regarding Redox Reactions. This is usually taught in JC1 Topic 1: Mole Concepts & Stoichiometry in their Junior College’s lectures and tutorial classes. They seems lost and don’t even know how to start when looking at a Redox Reactions question.
Many of them have approached their JC teacher or recommended H2 Chemistry tutor but still not able to solve redox reactions question confidently.
So, before you work on another Redox Reactions question, do go through the following:
4 steps on How to Solve Redox Reactions
1. Describe and explain redox processes in terms of electron transfer and/or of changes in oxidation number (oxidation state)
Reduction and Oxidation processes may be defined in terms of electron transfer and/or changes in oxidation number (oxidation state).
- Reduction: A process whereby a substance gains electrons, resulting in a decrease in oxidation number
- Oxidation: A process whereby a substance loses electrons. resulting in an increase in oxidation number
- Reducing Agent (Reductant): A substance that gives electrons to another, itself being oxidised in the process
- Oxidising Agent