[Janey]

Hi all ^^
we are repeating electrochemistry at the moment and got a homework I'm not able to solve at all :
The quantity of M is to be experimentally determined in the spinel MAl₂O₄.
Only the following types of ions come into question: Sn, Fe, Co, Ti, Mn and Cu.

Volume in mL and electric potential (E)

Determine the titrated type of ion and calculate how many ions are yielded.


I'm hoping you are able to help me  

[Borek]

Please post the question in its original wording.

[Janey]

The quantity of M is to be experimentally determined in the spinel MAl2O4.
Only the following types of ions come into question: Sn, Fe, Co, Ti, Mn and Cu.

Volume in mL and electric potential (E) (see the chart)

Determine the titrated type of ion and calculate how many ions are yielded.

I'm sorry, but that's the original wording, no further explanation or details ... which is the problem, I don't know what to do with the results of the measurement.

[Borek]

OK, recent posts page doesn't show attached images so I have missed part of the information.

Try to determine half-potential from the titration plot, that could be a clue. Note I am just wild guessing.