Question

How did you determine the equivalence point of the titration between permanganate and iron ions? there was a sharp increase in the temperature level there was a sharp increase in the conductivity of the mixture and the mixture turned colorless there was a sharp increase in the voltage level and the mixture changed color the mixture turned colorless

Answer 1

The equivalence point of the titration between permangate and iron ions is deter- mined by, there was a sharp increase in level and the mixture changed Voltage colour 1) Fe2+ > Mnat E Fe3+1 Feat Reason: The redox reaction reaction occurs during titration is as follows: Fe 3+ te → oxidation 2) Mnoh +8H +5e + 4H2O → Reduction Initially .Potential is = 0.77 Vol at equivalence point E = (neatlfest - E27 Fest & Minoa kun 2+ E noa Hnat) neatlFe 3+ + nun OÁ IM nat 1 x 0.77 + 5 X 1.051 -1.39 volt 1 + 5 after equivalence point potential is E MnO4 H227 = 1.51 volt Hence there potential Bere escacbonbabylow the pink is auto indicator. When colour of Mnoh retains it indicates the end point of titration. occurs Sharp increase in MnO4