HKDSE CHEM REDOX MASTER

Part 1: Species Role, Color Change & Oxidation State Trainer

Select the correct Role (OA, RA, or Both), Color Change, and Oxidation State to unlock the Half-Equation & Color Explanation.

Part 1 describes the named species and its products. In a mixed solution, other coloured species and excess reagents can affect the overall observation. Part 2 states which solution or gas to observe.