Edexcel IGCSE Chemistry 1.59C electrolysis half-equations
Practise half-equation questions by balancing ions and electrons, then explaining oxidation or reduction from electron transfer.
- Syllabus
- First assessment 2019
- Course
- Chemistry 4CH1
Practise half-equation questions by balancing ions and electrons, then explaining oxidation or reduction from electron transfer.
This question is about Group 2 elements and their compounds.
A concentrated aqueous solution of magnesium chloride is electrolysed. Chlorine forms at the positive electrode.
Give the half-equation for the reaction at the positive electrode.
2Cl−→Cl2+2e(−)