1.

MnO_(4)^(-) + 8H^(+) + 5e to Mn^(2+) + 4H_(2)O Fe^(3+) + e to Fe^(2+) , E^(@) = +1.51 V Cl_(2) + 2e to 2Cl^(-), E^(@) = +0.77 V Cl_(2) + 2e to 2Cl^(-), E^(@) =+1.36 V Ce^(4+) + e to Ce^(3+), E^(@) = 1.76 Choose the incorrect statement among the following:

Answer»

`MnO_(4)^(-)` is a sufficiently strong oxidant in acidic solution (pH=0) to oxidise `FE^(2+)` ion.
`Fe^(2+)` ion cannot be titrated against STANDARD `KMnO_(4)` solution is the medium is MADE acidic (pH=0) by adding HCl.
`MnO_(4)` ion cannot oxidise `Ca^(3+)` in acidic medium (pH=0)
`Fe^(2+)` cannot be titrated against standard `KMnO_(4)` solution in ACID medium (pH=0 in presence of `Ce^(3+)` ion.

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