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What are intermolecular forces? Why are intermolecular

Introductory Chemistry | 5th Edition | ISBN: 9780321910295 | Authors: Nivaldo J Tro ISBN: 9780321910295 34

Solution for problem 1Q Chapter 12

Introductory Chemistry | 5th Edition

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Introductory Chemistry | 5th Edition | ISBN: 9780321910295 | Authors: Nivaldo J Tro

Introductory Chemistry | 5th Edition

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Problem 1Q

PROBLEM 1Q

What are intermolecular forces? Why are intermolecular forces important?

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Solution 1Q

Forces binding atoms in a molecule are due to chemical bonding. The energy required to break a bond is called the bond-energy

The forces holding molecules together are generally called intermolecular forces. The energy required to break molecules apart is much smaller than a typical bond-energy, but intermolecular forces play important roles in determining the properties of a substances.

 Intermolecular forces are particularly important in terms how molecules interact and form biological organisms or even life.

In general, intermolecular forces can be divided into several categories. The four prominent types are:

Strong ionic attractionRecall lattice energy and its relations to properties of solid. The more ionic, the higher the lattice energy. Examine the following list and see if you can explain the observed values by way of ionic attraction:LiF, 1036; LiI, 737; KF, 821; MgF2, 2957 kJ/mol.Intermediate dipole-dipole forcesSubstances whose molecules have dipole moment have higher melting point or boiling point than those of similar molecular mass, but their molecules have no dipole moment.Weak London dispersion forces or van der Waal's force These forces alway operate in any substance. The force arisen from induced dipole and the interaction is weaker than the dipole-dipole interaction. In general, the heavier the molecule,...
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Chapter 12, Problem 1Q is Solved
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Textbook: Introductory Chemistry
Edition: 5
Author: Nivaldo J Tro
ISBN: 9780321910295

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What are intermolecular forces? Why are intermolecular

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