Give the relationships between the following pairs of structures. The possible relationships are as follows: same compound, cis-trans isomers, constitutional (structural) isomers, and not isomers (different molecular formula).
(a) CH₃CH₂CH₂CH₃ and (CH₃)₃CH
(b) CH₂=CH–CH₂Cl and CHCl=CH–CH₃

검증된 단계별 안내

Step 1: Analyze the molecular formula of each compound in pair (a). CH3CH2CH2CH3 is a straight-chain alkane with the molecular formula C4H10, while (CH3)3CH is a branched alkane with the same molecular formula C4H10.

Step 2: Determine the relationship between the compounds in pair (a). Since both compounds have the same molecular formula but differ in connectivity (straight-chain vs branched), they are constitutional (structural) isomers.

Step 3: Analyze the molecular formula of each compound in pair (b). CH2=CHCH2Cl has the molecular formula C3H5Cl, while CHCl=CHCH3 has the molecular formula C3H5Cl as well.

Step 4: Examine the connectivity and arrangement of atoms in pair (b). CH2=CHCH2Cl has a chlorine atom attached to the terminal carbon of the propene chain, while CHCl=CHCH3 has the chlorine atom attached to the middle carbon of the propene chain. This difference in connectivity indicates that they are constitutional (structural) isomers.

Step 5: Summarize the relationships: Pair (a) consists of constitutional isomers due to different connectivity of atoms in the same molecular formula. Pair (b) also consists of constitutional isomers due to different connectivity of atoms in the same molecular formula.

비슷한 문제에 대한 검증된 영상 답변:

이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.

영상 길이:

주요 개념

질문에 올바르게 답하기 위해 반드시 이해해야 하는 핵심 개념들은 다음과 같습니다.

Isomerism

Isomerism refers to the phenomenon where two or more compounds have the same molecular formula but different structural arrangements or spatial orientations. This can lead to different physical and chemical properties. The main types of isomers include structural isomers, which differ in the connectivity of atoms, and stereoisomers, which have the same connectivity but differ in the spatial arrangement of atoms.

Cis-Trans Isomerism

Cis-trans isomerism is a type of stereoisomerism that occurs in compounds with restricted rotation around a double bond or a ring structure. In cis isomers, substituents are on the same side of the double bond or ring, while in trans isomers, they are on opposite sides. This difference in arrangement can significantly affect the physical properties of the compounds, such as boiling points and solubility.

Constitutional Isomers

Constitutional isomers, also known as structural isomers, are compounds that have the same molecular formula but differ in the connectivity of their atoms. This means that the atoms are bonded together in different ways, leading to distinct compounds with unique properties. Understanding constitutional isomers is crucial for identifying relationships between different chemical structures and predicting their reactivity.

Give the relationships between the following pairs of structures. The possible relationships are as follows: same ­compound, cis-trans isomers, constitutional (structural) isomers, and not isomers (different molecular formula). (a) CH3CH2CH2CH3 and (CH3)3CH (b) CH2=CH–CH2Cl and CHCl=CH–CH3

비슷한 문제에 대한 검증된 영상 답변:

주요 개념

Isomerism

Cis-Trans Isomerism

Constitutional Isomers