Please explain which roman numeral is false and WHY: Karl Fischer Titration of H
ID: 892989 • Letter: P
Question
Please explain which roman numeral is false and WHY:
Karl Fischer Titration of H2O: The Karl Fischer titration measures the traces of water in samples such as transformer oils, foods, polymers, and so forth. Which of the following is NOT true for the chemistry involved?
I The anode solution contains iodide; an alcohol, ROH; a base, B; sulfur dioxide; and possibly other organic compounds.
II ROH + SO2 + B BH+ +
III I2 is generated from I at the cathode.
IV H2O + I2 + + 2 B + 2 BH+I-
V Two moles of e corresponds to one mole H2O
Explanation / Answer
Solution :-
The change of I- to I2 is the oxidation process therefore it takes place on the anode and not at the cathode because on the cathode reduction reaction takes place.
Therefore the staatement which is not true is as follows.
III I2 is generated from I at the cathode.