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Chemistry In Focus

7th Edition
Tro + 1 other
Publisher: Cengage Learning,
ISBN: 9781337399692

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BuyFindarrow_forward

Chemistry In Focus

7th Edition
Tro + 1 other
Publisher: Cengage Learning,
ISBN: 9781337399692
Chapter 5, Problem 5.9YT
Textbook Problem
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Predicting the Shapes of Molecules Containing Multiple Bonds II

Use Lewis structures and VSEPR theory to predict the molecular geometry of C 2 H 2 . (The two carbon atoms are in the middle, and the hydrogen atoms are on the ends.)

Interpretation Introduction

Interpretation:

Using Lewis structure and VSEPR theory, the molecular geometry of C2H2 is to be predicted.

Concept introduction:

The VSEPR(valence shell electron pair repulsion) theory is helpful in predicting the shapes of molecules from their Lewis structures.

The electron geometries of a molecule are determined on the basis of the total number of electron groups, the number of bonding groups, and the number of lone pairs.

To determine the molecular geometry of the molecule, the Lewis structure is drawn and the electron groups are counted. On the basis of bonding groups, the molecular geometry is predicted.

Explanation of Solution

The Lewis structure of C2H2 is as follows:

One triple bond is needed to give each of the carbons an octet. The two carbon atoms are bonded by a triple bond, which is counted as one electron pair. There are two single bonded hydrogen atoms attached to the carbons

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Chapter 5 Solutions

Chemistry In Focus
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