The structural formulas of the compounds n-butane and isobutane are shown below. (c) Which formulas—empirical, molecular, or structural—allow you determine these are different compounds?

검증된 단계별 안내

Step 1: Understand the types of chemical formulas: Empirical formulas show the simplest whole-number ratio of atoms in a compound, molecular formulas show the actual number of each type of atom in a molecule, and structural formulas show the arrangement of atoms within the molecule.

Step 2: Examine the structural formulas of n-pentane and isopentane provided in the image. Notice the different arrangements of carbon and hydrogen atoms.

Step 3: Compare the molecular formulas of n-pentane and isopentane. Both have the same molecular formula, C5H12, indicating they are isomers.

Step 4: Compare the empirical formulas of n-pentane and isopentane. Both have the same empirical formula, C5H12, as it is the simplest ratio of atoms.

Step 5: Conclude that the structural formulas are necessary to determine that n-pentane and isopentane are different compounds, as they show the different arrangements of atoms.

비슷한 문제에 대한 검증된 영상 답변:

이 영상 해법은 위 문제에 도움이 된다고 튜터들이 추천한 것입니다.

영상 길이:

37s

주요 개념

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

Structural Isomerism

Structural isomerism occurs when compounds have the same molecular formula but different structural formulas. In the case of n-pentane and isopentane, both have the molecular formula C5H12, yet their structural arrangements differ, leading to distinct physical and chemical properties. Understanding this concept is crucial for identifying how compounds can be classified as different despite having the same number of atoms.

Empirical vs. Molecular vs. Structural Formulas

Empirical formulas represent the simplest whole-number ratio of elements in a compound, while molecular formulas indicate the actual number of each type of atom present. Structural formulas provide a visual representation of how atoms are connected. To determine that n-pentane and isopentane are different compounds, one must analyze their structural formulas, as they reveal the distinct arrangements of atoms that define each compound.

Chemical Properties and Reactivity

The chemical properties and reactivity of compounds can vary significantly based on their structure. Isomers, such as n-pentane and isopentane, may exhibit different boiling points, melting points, and reactivity due to their unique arrangements of atoms. Recognizing these differences is essential for understanding how structural variations influence the behavior of chemical substances.