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Which of the following statements are correct?
I. A pair of positional isomers differs in the position of the same functional group.
II. A pair of. structural isomers have the same relative molar mass.
Ill. A pair of functional group isomers belongs to different homologous series.
II. A pair of. structural isomers have the same relative molar mass.
Ill. A pair of functional group isomers belongs to different homologous series.
- a)I, II and Ill
- b)I and Ill
- c)II and III
- d)I and II
Correct answer is option 'A'. Can you explain this answer?
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Verified Answer
Which of the following statements are correct?I. A pair of positional ...
According to me all statements are correct. For statement I, positional isomers have the same functional group. They just differ in the position of that group.
Statenmen II- Structural isomers have the same relative molar mass. Actually relative mass means the mass of one isomer is samee relative to another. Structural isomers differ in the structure of molecules. However they have the same molecular formula and hence; same molar mass.
Statement III- According to me, this statement is correct. As homologous series must contain the same functional group with the same physical & chemical properties. Also functional group isomers differ in the functional group attached with them. So, functional group isomers belong to different homologous series.
Statenmen II- Structural isomers have the same relative molar mass. Actually relative mass means the mass of one isomer is samee relative to another. Structural isomers differ in the structure of molecules. However they have the same molecular formula and hence; same molar mass.
Statement III- According to me, this statement is correct. As homologous series must contain the same functional group with the same physical & chemical properties. Also functional group isomers differ in the functional group attached with them. So, functional group isomers belong to different homologous series.
Most Upvoted Answer
Which of the following statements are correct?I. A pair of positional ...
The correct answer is option 'A' - I and II.
Explanation:
I. A pair of positional isomers differs in the position of the same functional group.
Positional isomers are a type of structural isomers where the isomers differ in the position of a functional group or substituent on the carbon chain. For example, consider the isomers of butanol:
CH3-CH2-CH2-CH2-OH (1-butanol)
CH3-CH2-CH-CH3-OH (2-butanol)
In these examples, the functional group (OH) is located at different positions on the carbon chain, resulting in positional isomers.
II. A pair of structural isomers have the same relative molar mass.
Structural isomers are compounds that have the same molecular formula but differ in the arrangement of atoms within the molecule. Despite having different structures, they have the same relative molar mass because they contain the same number and types of atoms. For example, consider the isomers of butane:
CH3-CH2-CH2-CH3 (n-butane)
CH3-CH-CH3-CH3 (isobutane)
Both isomers have the molecular formula C4H10 and thus have the same relative molar mass.
III. A pair of functional group isomers belongs to different homologous series.
Functional group isomers are compounds that have the same molecular formula but differ in the functional group present. Homologous series refers to a series of organic compounds that have the same functional group and similar chemical properties, with a gradual increase in the number of carbon atoms in the molecule.
For example, consider the isomers of pentanol:
CH3-CH2-CH2-CH2-CH2-OH (n-pentanol)
CH3-CH2-CH2-CH-CH3-OH (isopentanol)
Both isomers have the molecular formula C5H12O, but n-pentanol belongs to the alcohol homologous series, while isopentanol belongs to the alkene homologous series. Therefore, they belong to different homologous series.
Based on the explanations above, we can conclude that statements I and II are correct, while statement III is incorrect.
Explanation:
I. A pair of positional isomers differs in the position of the same functional group.
Positional isomers are a type of structural isomers where the isomers differ in the position of a functional group or substituent on the carbon chain. For example, consider the isomers of butanol:
CH3-CH2-CH2-CH2-OH (1-butanol)
CH3-CH2-CH-CH3-OH (2-butanol)
In these examples, the functional group (OH) is located at different positions on the carbon chain, resulting in positional isomers.
II. A pair of structural isomers have the same relative molar mass.
Structural isomers are compounds that have the same molecular formula but differ in the arrangement of atoms within the molecule. Despite having different structures, they have the same relative molar mass because they contain the same number and types of atoms. For example, consider the isomers of butane:
CH3-CH2-CH2-CH3 (n-butane)
CH3-CH-CH3-CH3 (isobutane)
Both isomers have the molecular formula C4H10 and thus have the same relative molar mass.
III. A pair of functional group isomers belongs to different homologous series.
Functional group isomers are compounds that have the same molecular formula but differ in the functional group present. Homologous series refers to a series of organic compounds that have the same functional group and similar chemical properties, with a gradual increase in the number of carbon atoms in the molecule.
For example, consider the isomers of pentanol:
CH3-CH2-CH2-CH2-CH2-OH (n-pentanol)
CH3-CH2-CH2-CH-CH3-OH (isopentanol)
Both isomers have the molecular formula C5H12O, but n-pentanol belongs to the alcohol homologous series, while isopentanol belongs to the alkene homologous series. Therefore, they belong to different homologous series.
Based on the explanations above, we can conclude that statements I and II are correct, while statement III is incorrect.
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Which of the following statements are correct?I. A pair of positional ...
Yes 3rd point wrong bcz frr molar weight change ho jayega.....isomer conditions same molar mass hona chahiye
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Which of the following statements are correct?I. A pair of positional isomers differs in the position of the same functional group.II. A pair of. structural isomers have the same relative molar mass.Ill. A pair of functional group isomers belongs to different homologous series.a)I, II and Illb)I and Illc)II and IIId)I and IICorrect answer is option 'A'. Can you explain this answer?
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