0
What the purpose of sodium azide modification to the winkler titration procedure?
Wiki User
∙ 14y ago
The Azide Modification of the Winkler Method is the standard test for dissolved oxygen. It uses a buret and 0.025 N sodium thiosulfate. The standard APHA reagents in solution form also are available. In the analysis, manganous ion reacts with the dissolved oxygen present in the alkaline solution to form a manganese (IV) oxide hydroxide flocculent. Azide is added at this time to suppress interference from any nitrite present which would react with the iodide. The solution is then acidified and the manganese (IV) floc is reduced by iodide to produce free iodine as I3- in proportion to the oxygen concentration. The liberated iodine is then titrated to the starch-iodide end point.
Wiki User
∙ 14y ago
Add your answer:
Earn +20 pts
When was the element germanium discovered?
Germanium was discovered in 1886 by Clemens A. Winkler.
Who discoverd germanium?
Germanium was discovered in 1886 by Clemens Alexander Winkler.
How did germanium get its name?
Derived from Germania- meaning Germany. Since it was first discovered by Clemens Winkler in Germany.
How did germanium gets name?
Derived from Germania- meaning Germany. Since it was first discovered by Clemens Winkler in Germany.
Who discovered germanium?
In mid-1885, at a mine near Freiberg, Saxony, a new mineral was discovered and named argyrodite because of the high silver content. The chemist Clemens Winkler analyzed this new mineral, which proved to be a combination of silver, sulfur, and a new element. Winkler was able to isolate the new element in 1886 and found it similar to antimony. Before Winkler published his results on the new element, he decided that he would name his element neptunium, since the recent discovery of planet Neptune in 1846 had been preceded by mathematical predictions of its existence. However, the name "neptunium" had already been given to another proposed chemical element (though not the element that today bears the name neptunium, which was discovered in 1940). So instead, Winkler named the new element germanium (from the Latin word, Germania, for Germany) in honor of his homeland.
What are the steps of the winkler method in order?
Winkler Method is a classical method(titration method) for determine the dissolved oxygen(BOD).
What is the purpose of adding MnSO4 in Winkler's methode?
determine the dissolved oxygen(BOD).iodometryMnSO4+Na2CO3
What is the birth name of Ben Winkler?
Ben Winkler's birth name is Benjamin Winkler.
What is the birth name of Nina Winkler?
Nina Winkler's birth name is Janina Winkler.
What is the birth name of Maya Winkler?
Maya Winkler's birth name is Maya Nelson-Winkler.
What is the birth name of Henry Winkler?
Henry Winkler's birth name is Henry Franklin Winkler.
Is Bri Winkler related to Henry Winkler?
Austin John Winkler is not related to Henry Winkler.Austin Winkler, the rock singer, is not related to Henry Winkler, the famous actor. Henry has a son named Max and a daughter named Zoe.
Who is Henry winkler's dad?
Harry Irving Winkler
When did Gus Winkler die?
Gus Wickie died in 1938.
When was Wolfgang Winkler born?
Wolfgang Winkler was born in 1940.
When was Gershon Winkler born?
Gershon Winkler was born in 1949.
When was Hal Winkler born?
Hal Winkler was born in 1894.
