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Which is incorrect IUPAC name A) 3-pentyne B) 3-methyl-2-butanone C) 2-ethyl-3-methyl-1-butene D) 3-ethyl-2-methyl pentane?
Most Upvoted Answer
Which is incorrect IUPAC name A) 3-pentyne B) 3-methyl-2-butanone C) 2...
3-pentyne
on numbering the carbon chain correctly
correct name would be 2-pentyne
on numbering the carbon chain correctly
correct name would be 2-pentyne
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Which is incorrect IUPAC name A) 3-pentyne B) 3-methyl-2-butanone C) 2...
Which is incorrect IUPAC name A) 3-pentyne B) 3-methyl-2-butanone C) 2-ethyl-3-methyl-1-butene D) 3-ethyl-2-methyl pentane? Explain in detail.
Explanation:
Introduction:
The International Union of Pure and Applied Chemistry (IUPAC) is responsible for establishing a standardized system for naming chemical compounds. This system, known as IUPAC nomenclature, ensures that every compound has a unique name that accurately describes its structure.
Analysis of the given options:
Let's analyze each option to determine which one has an incorrect IUPAC name:
A) 3-pentyne:
The name "3-pentyne" indicates that it is a pentane molecule with a triple bond (yne) at the third carbon. This name follows the IUPAC rules correctly, so option A is correct.
B) 3-methyl-2-butanone:
The name "3-methyl-2-butanone" indicates that it is a ketone with a methyl group attached to the third carbon of a butane molecule. This name follows the IUPAC rules correctly, so option B is correct.
C) 2-ethyl-3-methyl-1-butene:
The name "2-ethyl-3-methyl-1-butene" indicates that it is an alkene with an ethyl group attached to the second carbon and a methyl group attached to the third carbon of a butene molecule. This name follows the IUPAC rules correctly, so option C is correct.
D) 3-ethyl-2-methyl pentane:
The name "3-ethyl-2-methyl pentane" indicates that it is an alkane with an ethyl group attached to the third carbon and a methyl group attached to the second carbon of a pentane molecule. This name does not follow the IUPAC rules correctly because when numbering the parent chain, the lowest set of locants should be used. In this case, the correct name should be "2-ethyl-3-methyl pentane" to ensure the lowest set of locants for the substituents. Therefore, option D is incorrect.
Conclusion:
After analyzing the given options, we can conclude that the incorrect IUPAC name is D) 3-ethyl-2-methyl pentane. The correct name for this compound should be 2-ethyl-3-methyl pentane to follow the IUPAC nomenclature rules accurately.
Explanation:
Introduction:
The International Union of Pure and Applied Chemistry (IUPAC) is responsible for establishing a standardized system for naming chemical compounds. This system, known as IUPAC nomenclature, ensures that every compound has a unique name that accurately describes its structure.
Analysis of the given options:
Let's analyze each option to determine which one has an incorrect IUPAC name:
A) 3-pentyne:
The name "3-pentyne" indicates that it is a pentane molecule with a triple bond (yne) at the third carbon. This name follows the IUPAC rules correctly, so option A is correct.
B) 3-methyl-2-butanone:
The name "3-methyl-2-butanone" indicates that it is a ketone with a methyl group attached to the third carbon of a butane molecule. This name follows the IUPAC rules correctly, so option B is correct.
C) 2-ethyl-3-methyl-1-butene:
The name "2-ethyl-3-methyl-1-butene" indicates that it is an alkene with an ethyl group attached to the second carbon and a methyl group attached to the third carbon of a butene molecule. This name follows the IUPAC rules correctly, so option C is correct.
D) 3-ethyl-2-methyl pentane:
The name "3-ethyl-2-methyl pentane" indicates that it is an alkane with an ethyl group attached to the third carbon and a methyl group attached to the second carbon of a pentane molecule. This name does not follow the IUPAC rules correctly because when numbering the parent chain, the lowest set of locants should be used. In this case, the correct name should be "2-ethyl-3-methyl pentane" to ensure the lowest set of locants for the substituents. Therefore, option D is incorrect.
Conclusion:
After analyzing the given options, we can conclude that the incorrect IUPAC name is D) 3-ethyl-2-methyl pentane. The correct name for this compound should be 2-ethyl-3-methyl pentane to follow the IUPAC nomenclature rules accurately.
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Which is incorrect IUPAC name A) 3-pentyne B) 3-methyl-2-butanone C) 2-ethyl-3-methyl-1-butene D) 3-ethyl-2-methyl pentane?
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