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The true statement(s) regarding the brown ring test carried out in the laboratory for the detection of NO3- is/are
- a)Brown ring is due to the formation of the iron nitrosyl complex.
- b)Concentrated nitric acid is used for the test.
- c)The complex formed in the reaction is [Fe(CN)5NO]2-.
- d)The brown colored complex is paramagnetic in nature.
Correct answer is option 'A,D'. Can you explain this answer?
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Verified Answer
The true statement(s) regarding the brown ring test carried out in the...
- Complex formed is [Fe(H2O)5NO]SO4.
- Concentrated Sulphuric acid is used.
- Brown ring is formed at the junction of two layers.
- Brown coloured complex is paramagnetic.
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The true statement(s) regarding the brown ring test carried out in the...
The Brown Ring Test is a laboratory test for the detection of nitrate ions (NO3-) in a given solution. The test involves the following steps:
1. A small amount of the test solution is taken in a test tube.
2. Concentrated sulfuric acid is added to the test tube, which forms a layer at the bottom of the test tube.
3. A small amount of freshly prepared ferrous sulfate solution is added to the test tube, which forms a brown ring at the junction of the two layers.
The true statements regarding the Brown Ring Test are:
A) Brown ring is due to the formation of the iron nitrosyl complex.
The brown ring that forms at the junction of the two layers is due to the formation of the iron nitrosyl complex [Fe(NO)(H2O)5]2+, which is formed by the reaction of nitrate ions with ferrous ions in the presence of sulfuric acid.
D) The brown colored complex is paramagnetic in nature.
The brown colored complex [Fe(NO)(H2O)5]2+ is paramagnetic in nature, which means it is attracted towards a magnetic field. This property is due to the presence of an unpaired electron in the complex.
B and C are false statements.
B) Concentrated nitric acid is used for the test.
Concentrated sulfuric acid is used for the test, not nitric acid.
C) The complex formed in the reaction is [Fe(CN)5NO]2-.
The complex formed in the reaction is [Fe(NO)(H2O)5]2+, not [Fe(CN)5NO]2-.
1. A small amount of the test solution is taken in a test tube.
2. Concentrated sulfuric acid is added to the test tube, which forms a layer at the bottom of the test tube.
3. A small amount of freshly prepared ferrous sulfate solution is added to the test tube, which forms a brown ring at the junction of the two layers.
The true statements regarding the Brown Ring Test are:
A) Brown ring is due to the formation of the iron nitrosyl complex.
The brown ring that forms at the junction of the two layers is due to the formation of the iron nitrosyl complex [Fe(NO)(H2O)5]2+, which is formed by the reaction of nitrate ions with ferrous ions in the presence of sulfuric acid.
D) The brown colored complex is paramagnetic in nature.
The brown colored complex [Fe(NO)(H2O)5]2+ is paramagnetic in nature, which means it is attracted towards a magnetic field. This property is due to the presence of an unpaired electron in the complex.
B and C are false statements.
B) Concentrated nitric acid is used for the test.
Concentrated sulfuric acid is used for the test, not nitric acid.
C) The complex formed in the reaction is [Fe(CN)5NO]2-.
The complex formed in the reaction is [Fe(NO)(H2O)5]2+, not [Fe(CN)5NO]2-.
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The true statement(s) regarding the brown ring test carried out in the...
Complex formed is [Fe(H2O)5NO]SO4
concentrated sulphuric acid is used. brown ring is formed at the junction of two layers
brown coloured complex is paramagnetic
concentrated sulphuric acid is used. brown ring is formed at the junction of two layers
brown coloured complex is paramagnetic
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The true statement(s) regarding the brown ring test carried out in the laboratory for the detection of NO3- is/area)Brown ring is due to the formation of the iron nitrosyl complex.b)Concentrated nitric acid is used for the test.c)The complex formed in the reaction is [Fe(CN)5NO]2-.d)The brown colored complex is paramagnetic in nature.Correct answer is option 'A,D'. Can you explain this answer?
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Solutions for The true statement(s) regarding the brown ring test carried out in the laboratory for the detection of NO3- is/area)Brown ring is due to the formation of the iron nitrosyl complex.b)Concentrated nitric acid is used for the test.c)The complex formed in the reaction is [Fe(CN)5NO]2-.d)The brown colored complex is paramagnetic in nature.Correct answer is option 'A,D'. Can you explain this answer? in English & in Hindi are available as part of our courses for Chemistry.
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