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Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074

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BuyFindarrow_forward

Chemistry & Chemical Reactivity

10th Edition
John C. Kotz + 3 others
ISBN: 9781337399074
Textbook Problem

You are comparing three different substances, A, B, and C, all liquids and having similar molar masses. The vapor pressure at 25 °C for substance A is less than the vapor pressure for B at this temperature. Substance C has the highest boiling point of the three substances. List the three substances A, B, or C in order of the strength of intermolecular forces, from least to greatest.

Interpretation Introduction

Interpretation: The given substance should be arranged based on the strength of intermolecular forces from least to greatest.

Concept Introduction:

Concept Introduction: Vapor pressure is nothing but the pressure of a vapor in contact with its liquid or solid form.

When a liquid and vapor are in equilibrium the pressure exerted by the vapor is called the equilibrium vapor pressure.

If intermolecular force is small the vapor pressure of the substance is high and the boiling point will be low.

Intermolecular force: The attractive force that withholds two molecules is called as intermolecular force. The influence of intermolecular forces depends on molar mass and the functional group present in the molecule.

Explanation

If intermolecular force is small the vapor pressure of the substance is high and the boiling point will be low.

The vapor pressure of A is less than B implies that A has high intermolecular force than B.

Substance C has highest boiling point that indicates that C has highest intermolecular force compari...

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