Organic Chemistry - Standalone book
Organic Chemistry - Standalone book
10th Edition
ISBN: 9780073511214
Author: Francis A Carey Dr., Robert M. Giuliano
Publisher: McGraw-Hill Education
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Chapter 2, Problem 22P

The general molecular formula for alkanes is C n H 2n+2 . . What is the general molecular formula for:

Cycloalkanes

Alkenes

Alkynes

Cyclic hydrocarbons that contain one double bond

Expert Solution & Answer
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Interpretation Introduction

Interpretation:

The general molecular formula for the given hydrocarbons is to be written.

Concept introduction:

The general molecular formula of a class of compounds represents the ratio of the number of atoms of different types of elements present.

When the functional group changes, the general molecular formula changes.

Answer to Problem 22P

Solution:

CnH2n

CnH2n

CnH2n2

CnH2n2

Explanation of Solution

(a) Cycloalkanes.

These contain a ring of three or more carbon atoms. Because of this, the number of hydrogen atoms reduces by two as compared to corresponding alkanes having similar configuration.

The general molecular formula of cycloalkanes is CnH2n.

(b) Alkenes.

These contain at least one carbon-carbon double bond. Alkenes have two hydrogen atoms less as compared to alkanes having the same number of carbon atoms.

The general molecular formula of alkenes is CnH2n

(c) Alkynes.

Alkynes are hydrocarbons that contain at least one carbon-carbon triple bond. Alkynes have four hydrogen atoms less as compared to alkanes that have the equal number of carbon atoms.

The general molecular formula of alkynes is CnH2n2

(d) Cyclic hydrocarbons that contain one double bond.

They have one carbon-carbon double bond that are cycloalkenes. Cycloalkenes have four hydrogen atoms less as compared to alkanes having the same number of carbon atoms.

The general molecular formula of cyclic hydrocarbons that contain one carbon-carbon double bond is CnH2n2

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Chapter 2 Solutions

Organic Chemistry - Standalone book

Ch. 2.16 - Prob. 11PCh. 2.17 - Prob. 12PCh. 2.18 - Prob. 13PCh. 2.20 - Prob. 14PCh. 2.21 - Match the boiling points with the appropriate...Ch. 2.22 - Write a balanced chemical equation for the...Ch. 2.22 - Using the data in Table 2.3, estimate the heat of...Ch. 2.22 - Prob. 18PCh. 2.22 - Prob. 19PCh. 2.23 - Prob. 20PCh. 2.23 - Which of the following reactions requires an...Ch. 2 - The general molecular formula for alkanes is...Ch. 2 - Prob. 23PCh. 2 - Prob. 24PCh. 2 - Prob. 25PCh. 2 - What is the hybridization of each carbon in...Ch. 2 - Prob. 27PCh. 2 - Does the overlap of two p orbitals in the fashion...Ch. 2 - Prob. 29PCh. 2 - Aphids secrete an alarm pheromone having the...Ch. 2 - All the parts of this problem refer to the alkane...Ch. 2 - Prob. 32PCh. 2 - Prob. 33PCh. 2 - Prob. 34PCh. 2 - From among the 18 constitutional isomers of C8H18,...Ch. 2 - Give the IUPAC name for each of the following...Ch. 2 - Using the method outlined in Section 2.16, give an...Ch. 2 - Prob. 38PCh. 2 - Write a balanced chemical equation for the...Ch. 2 - The heats of combustion of methane and butane are...Ch. 2 - In each of the following groups of compounds,...Ch. 2 - Given H for the reaction H2(g)+12O2(g)H2O(l)...Ch. 2 - Prob. 43PCh. 2 - Prob. 44PCh. 2 - Prob. 45PCh. 2 - Prob. 46PCh. 2 - Prob. 47PCh. 2 - Compound A undergoes the following reactions:...Ch. 2 - Prob. 49PCh. 2 - Some Biochemical Reactions of Alkanes Alkanes...Ch. 2 - Prob. 51DSPCh. 2 - Some Biochemical Reactions of Alkanes Alkanes...Ch. 2 - Prob. 53DSP
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Chapter 4 Alkanes and Cycloalkanes Lesson 2; Author: Linda Hanson;https://www.youtube.com/watch?v=AL_CM_Btef4;License: Standard YouTube License, CC-BY
Chapter 4 Alkanes and Cycloalkanes Lesson 1; Author: Linda Hanson;https://www.youtube.com/watch?v=PPIa6EHJMJw;License: Standard Youtube License