An Introduction to Qualitative Chemical Analysis By the Inductive Method a Labo
An Introduction to Qualitative Chemical Analysis By the Inductive Method a Labo
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To quickly assess the difficulty of the text, read a short excerpt:
Green solution.
No change. Blue precipitate.
Let the student write the equations for these tests.
SEPARATION OF METALS OF THE THIRD GROUP. 53 Oxidation.
The Meihod. Take two cubic centimeters of a solution of a ferrous salt (identified to be such by the proper tests) in a test tube and add two or three drops of nitric acid. Boil for a minute or two or until the brown fumes pass away. The solu- tion should now give the test for the ferric condition. By sev- eral tests determine the least amount ...of nitric acid necessary to accomplish the oxidation.
NOTE. An reaction very similar to this occurs in the "brown ring test" for nitric acid, and its thorough study may be reserved until that point is reached. The equation for the oxidation is as follows : 3FeS0 4 +4HN0 3 =Fe(N0 3 ) 3 +Fe 2 (S0 4 ) 3 +NO+2H 2 0.
In this connection several points should be noticed : 1. The value of HNO 3 as an oxidizing agent due to its un- stable character (?) and its large proportion of oxygen.
2. The effect which the mere presence of an oxidizable sub- stance, such as FeSO 4, produces on the HNO 3 .
What to read after An Introduction to Qualitative Chemical Analysis By the Inductive Method a Labo?
You can find similar books in the "Read Also" column, or choose other free books by Delos Fall to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
Green solution.
No change. Blue precipitate.
Let the student write the equations for these tests.
SEPARATION OF METALS OF THE THIRD GROUP. 53 Oxidation.
The Meihod. Take two cubic centimeters of a solution of a ferrous salt (identified to be such by the proper tests) in a test tube and add two or three drops of nitric acid. Boil for a minute or two or until the brown fumes pass away. The solu- tion should now give the test for the ferric condition. By sev- eral tests determine the least amount ...of nitric acid necessary to accomplish the oxidation.
NOTE. An reaction very similar to this occurs in the "brown ring test" for nitric acid, and its thorough study may be reserved until that point is reached. The equation for the oxidation is as follows : 3FeS0 4 +4HN0 3 =Fe(N0 3 ) 3 +Fe 2 (S0 4 ) 3 +NO+2H 2 0.
In this connection several points should be noticed : 1. The value of HNO 3 as an oxidizing agent due to its un- stable character (?) and its large proportion of oxygen.
2. The effect which the mere presence of an oxidizable sub- stance, such as FeSO 4, produces on the HNO 3 .
What to read after An Introduction to Qualitative Chemical Analysis By the Inductive Method a Labo?
You can find similar books in the "Read Also" column, or choose other free books by Delos Fall to read onlineMoreLess
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