I’m currently stuck on a question on redox titrations and I’m hoping someone can help. Here is the question
This question is about a metal ethanedioate salt, M2C2O4, where M is an unknown metal.
M2C2O4 is analysed by titration with a standard solution of potassium manganate(VII) in acidic conditions. The metal ion does not react with manganate(VII) ions.
2.07 g of M2C2O4 are dissolved in distilled water. The solution is made up to 250 cm3 25.0 cm3 samples of this solution are titrated with acidified potassium manganate(VII)
solution.
26.50 cm3 of 0.0188 mol dm–3 acidified potassium manganate(VII) solution are required for a complete reaction.
5C2O42– + 2MnO4– + 16H+ → 10CO2 + 2Mn2+ + 8H2O Calculate the relative atomic mass of the unknown metal, M.
Identify M.