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In the case of homologous series of alkanes, which one of the following statements is incorrect?
- a)The members of the series are isomers of each other.
- b)The members of the series have similar chemical properties.
- c)The members can be prepared by some common methods.
- d)The members have the same general formula CnH2n+2.
Correct answer is option 'A'. Can you explain this answer?
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In the case of homologous series of alkanes, which one of the followi...
Explanation:
Isomers:
- The statement that members of the homologous series of alkanes are isomers of each other is incorrect.
- Isomers are compounds that have the same molecular formula but different structural formulas.
- In a homologous series, each member differs from the next by a CH2 group, leading to different molecular formulas.
Similar Chemical Properties:
- The members of the series have similar chemical properties due to the presence of the same functional group (C-C and C-H bonds) in all alkanes.
- This similarity in chemical properties allows for predictable reactivity patterns within the series.
Preparation Methods:
- The members of the homologous series of alkanes can be prepared by common methods such as catalytic hydrogenation of alkenes or alkynes, hydrocracking of petroleum fractions, and the Kolbe electrolysis of salts of carboxylic acids.
General Formula:
- The members of the homologous series of alkanes have the same general formula CnH2n+2, where "n" represents the number of carbon atoms in the molecule.
- This formula indicates that alkanes are saturated hydrocarbons with single bonds between carbon atoms.
Therefore, the incorrect statement in the given options is that the members of the series are isomers of each other. In reality, they are not isomers but rather have a systematic increase in the number of carbon atoms and hydrogen atoms as we move along the series.
Isomers:
- The statement that members of the homologous series of alkanes are isomers of each other is incorrect.
- Isomers are compounds that have the same molecular formula but different structural formulas.
- In a homologous series, each member differs from the next by a CH2 group, leading to different molecular formulas.
Similar Chemical Properties:
- The members of the series have similar chemical properties due to the presence of the same functional group (C-C and C-H bonds) in all alkanes.
- This similarity in chemical properties allows for predictable reactivity patterns within the series.
Preparation Methods:
- The members of the homologous series of alkanes can be prepared by common methods such as catalytic hydrogenation of alkenes or alkynes, hydrocracking of petroleum fractions, and the Kolbe electrolysis of salts of carboxylic acids.
General Formula:
- The members of the homologous series of alkanes have the same general formula CnH2n+2, where "n" represents the number of carbon atoms in the molecule.
- This formula indicates that alkanes are saturated hydrocarbons with single bonds between carbon atoms.
Therefore, the incorrect statement in the given options is that the members of the series are isomers of each other. In reality, they are not isomers but rather have a systematic increase in the number of carbon atoms and hydrogen atoms as we move along the series.
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Community Answer
In the case of homologous series of alkanes, which one of the followi...
The members of the homologous series are called homolouges, not isomers.
Isomers have the same molecular formula and hence, the same molecular weight, whereas the homolouges differ by one -CH2 group and 14 unit mass.
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In the case of homologous series of alkanes, which one of the following statements is incorrect?a)The members of the series are isomers of each other.b)The members of the series have similar chemical properties.c)The members can be prepared by some common methods.d)The members have the same general formula CnH2n+2.Correct answer is option 'A'. Can you explain this answer?
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