**A. Determine which of the following species has the lower boiling point, and make sure to justify your answer.**(i) CH₄ vs C₆H₆ (ii) CO₂ vs SO₂ **B. Determine which of the following species has the lower vapor pressure, and make sure to justify your answer.**(i) CHCl₃ vs CCl₄ (ii) H₂O vs H₂S This exercise invites students to compare molecular species based on their boiling points and vapor pressures, providing justifications grounded in molecular structure and intermolecular forces. Analyzing factors like molecular weight, polarity, and hydrogen bonding will aid in forming comprehensive explanations.

Answered: A. Determine which of the following…

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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**A. Determine which of the following species has the lower boiling point, and make sure to justify your answer.**

(i) CH₄ vs C₆H₆
(ii) CO₂ vs SO₂

**B. Determine which of the following species has the lower vapor pressure, and make sure to justify your answer.**

(i) CHCl₃ vs CCl₄
(ii) H₂O vs H₂S

This exercise invites students to compare molecular species based on their boiling points and vapor pressures, providing justifications grounded in molecular structure and intermolecular forces. Analyzing factors like molecular weight, polarity, and hydrogen bonding will aid in forming comprehensive explanations.

Expert Solution

Step 1

At boiling point the vapour pressure of liquid and pressure exerted by the surrounding are equal. The compounds with high intermolecular forces will have high boiling point. Boiling point in hydrocarbons increases with increase in the number of carbon atoms and branching.

Gaseous molecules present above the liquid in sealed container will exert pressure on that liquid. This pressure is termed as vapor pressure. Vapor pressure increases with temperature. If molecules with strong intermolecular forces will exert lower vapor pressure while the molecule with weak intermolecular forces will exert higher vapor pressure.

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