Generalità e definizioni
L'ossidibilità al permanganato è definita come la quantità di ossigeno, espressa in mg/l, equivalente alla quantità permanganate consumed when a water sample is treated with a solution of potassium permanganate in acidic conditions and well defined.
Determination of organic substances by oxidation with potassium permanganate, hot
's analysis is based on the ability of the permanganate ion oxidation of organic matter to carbon dioxide and water. The reaction is taken place in acidic media.
Since the reaction occurs between an oxidant and most organic compounds in different 'reaction equation is not possible to identify any organic compound.
However, we can describe the situation with reference to the reaction:
2KmnO4 3H2SO4 → 2MnSO4 + + K2SO4 + 3H2O + 5O
The reaction should be interpreted as follows: permanganate, in acid for the presence of sulfuric acid, is reduced to manganous ion and provides the 'elemental oxygen used to 's oxidation of organic substances, so we put in direct correlation to the consumption of permanganate and oxygen consumption.
Reaction 1) is a redox because the manganese is reduced (the No. oxidation changed from +7 to +2) and the oxygen oxidizes (the No. oxidation changed from -2 to 0).
stoichiometric equation we learn that when consumed 31.6 grams of permanganate (1 eq permanganate) il consumo di ossigeno è pari a 8 g (1 eq di ossigeno); in altri termini il rapporto tra equivalenti di permanganato ed equivalenti di ossigeno è del tipo 1/1. Possiamo pertanto affermare che se, in una determinazione, il consumo di permanganato è pari al consumo di ossigeno.
L'ossidibilità al permanganato è definita come la quantità di ossigeno, espressa in mg/l, equivalente alla quantità permanganate consumed when a water sample is treated with a solution of potassium permanganate in acidic conditions and well defined.
Determination of organic substances by oxidation with potassium permanganate, hot
's analysis is based on the ability of the permanganate ion oxidation of organic matter to carbon dioxide and water. The reaction is taken place in acidic media.
Since the reaction occurs between an oxidant and most organic compounds in different 'reaction equation is not possible to identify any organic compound.
However, we can describe the situation with reference to the reaction:
2KmnO4 3H2SO4 → 2MnSO4 + + K2SO4 + 3H2O + 5O
The reaction should be interpreted as follows: permanganate, in acid for the presence of sulfuric acid, is reduced to manganous ion and provides the 'elemental oxygen used to 's oxidation of organic substances, so we put in direct correlation to the consumption of permanganate and oxygen consumption.
Reaction 1) is a redox because the manganese is reduced (the No. oxidation changed from +7 to +2) and the oxygen oxidizes (the No. oxidation changed from -2 to 0).
stoichiometric equation we learn that when consumed 31.6 grams of permanganate (1 eq permanganate) il consumo di ossigeno è pari a 8 g (1 eq di ossigeno); in altri termini il rapporto tra equivalenti di permanganato ed equivalenti di ossigeno è del tipo 1/1. Possiamo pertanto affermare che se, in una determinazione, il consumo di permanganato è pari al consumo di ossigeno.
No comments:
Post a Comment