Rank the compounds below in order of increasing vapor pressure at 298 K. H H H НН H. H H. H- C. H. C-H H-C H- H- C C-c-H H- H. H. H. H H. HH (a) (b) (c) Choose one: O A. A< B < C О В. А <С< В О С. В <С <А O D. B< A< C O E. C

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### Ranking Compounds by Vapor Pressure

**Task:**
Rank the compounds below in order of increasing vapor pressure at 298 K.

**Molecular Structures:**
- **Compound (a)**: 
  - Contains 3 carbon atoms, with single bonds (C-C-C configuration) and bonded to 8 hydrogen atoms.
- **Compound (b)**: 
  - Contains 4 carbon atoms, with single bonds (forming a ring structure) and bonded to 8 hydrogen atoms.
- **Compound (c)**: 
  - Contains 5 carbon atoms, with single bonds (also forming a ring structure) and bonded to 10 hydrogen atoms.

**Options:**
- **A.** \(A < B < C\)
- **B.** \(A < C < B\)
- **C.** \(B < C < A\)
- **D.** \(B < A < C\)
- **E.** \(C < A < B\)
- **F.** \(C < B < A\)

### Explanation:
- **Vapor Pressure:**
  Vapor pressure is the pressure exerted by a vapor in equilibrium with its liquid or solid phase at a given temperature. Generally, a compound with lower molecular weight and less intermolecular forces will have a higher vapor pressure.

- **Intermolecular Forces:**
  - A larger carbon ring structure typically results in stronger van der Waals forces due to increased surface area, leading to a lower vapor pressure.
  - Therefore, the ranked order must account for both the number of carbon atoms and the type of structure.

Review and select the correct option based on the information provided on molecular structure and vapor pressure characteristics. 

**Choose one:**
- **A.** \(A < B < C\)
- **B.** \(A < C < B\)
- **C.** \(B < C < A\)
- **D.** \(B < A < C\)
- **E.** \(C < A < B\)
- **F.** \(C < B < A\)
Transcribed Image Text:### Ranking Compounds by Vapor Pressure **Task:** Rank the compounds below in order of increasing vapor pressure at 298 K. **Molecular Structures:** - **Compound (a)**: - Contains 3 carbon atoms, with single bonds (C-C-C configuration) and bonded to 8 hydrogen atoms. - **Compound (b)**: - Contains 4 carbon atoms, with single bonds (forming a ring structure) and bonded to 8 hydrogen atoms. - **Compound (c)**: - Contains 5 carbon atoms, with single bonds (also forming a ring structure) and bonded to 10 hydrogen atoms. **Options:** - **A.** \(A < B < C\) - **B.** \(A < C < B\) - **C.** \(B < C < A\) - **D.** \(B < A < C\) - **E.** \(C < A < B\) - **F.** \(C < B < A\) ### Explanation: - **Vapor Pressure:** Vapor pressure is the pressure exerted by a vapor in equilibrium with its liquid or solid phase at a given temperature. Generally, a compound with lower molecular weight and less intermolecular forces will have a higher vapor pressure. - **Intermolecular Forces:** - A larger carbon ring structure typically results in stronger van der Waals forces due to increased surface area, leading to a lower vapor pressure. - Therefore, the ranked order must account for both the number of carbon atoms and the type of structure. Review and select the correct option based on the information provided on molecular structure and vapor pressure characteristics. **Choose one:** - **A.** \(A < B < C\) - **B.** \(A < C < B\) - **C.** \(B < C < A\) - **D.** \(B < A < C\) - **E.** \(C < A < B\) - **F.** \(C < B < A\)
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