Hey guys- would really appreciate some help on this redox titration qs!!
A 25.0 cm3 aliquot of a solution containing Fe2+ and Fe3+ ions was acidified and titrated against 0.0200 M potassium
manganate (VII) solution, requiring 15.0 cm3. Zn reduces Fe3+ to Fe2+ and a second aliquot was reduced by zinc and
after filtering off the excess zinc, was titrated with the same potassium manganate solution, requiring 19.0 cm3.
Calculate the concentrations of the Fe2+ and Fe3+ in the solution
Cheers!