Given below are two statements I and II.
Statement I: Dumas method is used for estimation of "Nitrogen" in an organic compound.
Statement II: Dumas method involves the formation of ammonium sulfate by heating the organic compound with concentrated H\(_2\)SO\(_4\). In the light of the above statements, choose the correct answer from the options given below:
Given below are two statements I and II.
Statement I: Dumas method is used for estimation of "Nitrogen" in an organic compound.
Statement II: Dumas method involves the formation of ammonium sulfate by heating the organic compound with concentrated H\(_2\)SO\(_4\). In the light of the above statements, choose the correct answer from the options given below:
Show Hint
- Both Statement I and Statement II are true
- Statement I is false but Statement II is true
- Both Statement I and Statement II are false
- Statement I is true but Statement II is false
The Correct Option is D
Approach Solution - 1
To determine the truthfulness of the given statements, let's analyze each one.
Statement I: Dumas method is used for estimation of "Nitrogen" in an organic compound.
This statement is true. The Dumas method is a classic method used in organic chemistry for the quantitative estimation of nitrogen in organic compounds. It involves heating the compound in the presence of excess oxygen to convert bound nitrogen into nitrogen gas (N2), which is then measured volumetrically.
Statement II: Dumas method involves the formation of ammonium sulfate by heating the organic compound with concentrated H2SO4.
This statement is false. The Dumas method does not involve formation of ammonium sulfate, nor does it utilize concentrated sulfuric acid (H2SO4). Instead, the compound is combusted in an oxygen-rich environment to form nitrogen gas. The statement seems to be confusing with Kjeldahl's method, which involves converting nitrogen to ammonium sulfate using sulfuric acid.
Thus, the correct answer is: Statement I is true but Statement II is false.
Approach Solution -2
Analysis of Dumas and Kjeldahl Methods
Statement I: The Dumas method is indeed used for the estimation of nitrogen in organic compounds. This method involves heating the compound in the presence of an oxidizing agent and collecting the nitrogen gas evolved. The nitrogen gas is then measured and used to calculate the amount of nitrogen in the sample. Therefore, Statement I is correct.
Statement II: The formation of ammonium sulfate by heating the organic compound with concentrated sulfuric acid (\( H_2SO_4 \)) is a characteristic of the Kjeldahl method, not the Dumas method. In the Kjeldahl method, nitrogen in the organic compound is converted into ammonium sulfate, which is then analyzed. This is different from the Dumas method, which does not involve ammonium sulfate formation. Therefore, Statement II is incorrect.
Conclusion:
The correct answer is \( \boxed{(4)} \), as Statement I is correct and Statement II is incorrect.
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