Lim En Jie's answer to ok's Junior College 1 H2 Maths Singapore question.

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Lim En Jie
Lim En Jie's answer
73 answers (Tutor Details)
Since it’s MCQ don’t have to balance out equations, just observe the number of electrons used for each ion and then calculate their ratio.

In this case 2 mol of MnO4(-) will react with 5 mol of C2O4(2-).


Can’t think of any other reagents for titration but have to be careful; in this case 1 mol KMnO4 gives 1 mol MnO4(-) ion but may differ if another reagent used.