Chemistry: The Central Science (13th Edition)

Published by Prentice Hall
ISBN 10: 0321910419
ISBN 13: 978-0-32191-041-7

Chapter 2 - Atoms, Molecules, and Ions - Exercises - Page 77: 2.81b

Answer

Structural formula: Picture attached. Molecular formula: $C_{5}H_{12}$ Empirical formula: $C_{5}H_{12}$
1562159026

Work Step by Step

In alkane, all the carbon atoms are bonded by hydrogen atoms. In a straight chain alkane with 5 carbon atoms, 12 hydrogen atoms are bonded. Thus, the structutal formula is attached below. To find the molecular formula, we count the total number of each element in a compound. In pentane, 5 carbon atoms are present and 12 hydrogen atoms are present. Therefore, the molecular formula will be $C_{5}H_{12}$ . In order to find the empirical formula we take out the simplest ratio of elements in a compound. $5:12$ cannot be simplified further so the empirical formula of pentane is $C_{5}H_{12}$
Small 1562159026
Update this answer!

You can help us out by revising, improving and updating this answer.

Update this answer

After you claim an answer you’ll have 24 hours to send in a draft. An editor will review the submission and either publish your submission or provide feedback.