Introduction to General, Organic and Biochemistry
Introduction to General, Organic and Biochemistry
12th Edition
ISBN: 9780357119303
Author: Bettelheim, Frederick A., Brown, William H., Campbell, Mary K., FARRELL, Shawn O., Torres, Omar
Publisher: Cengage Learning
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Chapter 11, Problem 31P
Interpretation Introduction

(a)

Interpretation:

Interpret the following statement is true or false.

‘Boiling point of alkane increases with number of carbon’.

Concept Introduction:

Alkane is a long chain of carbon linked with only single bond between each carbon. Its general formula is Cn H2n +2 where, n is number of carbon atom.

Moreover, straight chain have large surface area which increases the possibility of area of contact with other chain which results in higher vander waal forces between them and thus increases the boiling point. Change in the position of substituent attached on alkane may result in either constitutional isomerism or geometrical isomerism if present below or above the plane.

Alkanes not having any charge separation due to the absence of atoms of different electronegativity and thus they are non polar.

Expert Solution
Check Mark

Answer to Problem 31P

The given statement is true.

Explanation of Solution

The compound containing longest parent chain of carbon having high boiling point due to the bulkiness of the structure while the compound containing shortest parent chain of carbon having low boiling point.

Moreover, straight chain have large surface area which increases the possibility of area of contact with other chain which results in higher vander waal forces between them and thus increases the boiling point.

Conclusion

Hence, boiling point of alkane increases with number of carbon.

Interpretation Introduction

(b)

Interpretation:

Interpret the following statement is true or false.

‘Alkane having more density than water’.

Concept Introduction:

Alkane is a long chain of carbon linked with only single bond between each carbon. Its general formula is Cn H2n +2 where, n is number of carbon atom.

Moreover, straight chain have large surface area which increases the possibility of area of contact with other chain which results in higher vander waal forces between them and thus increases the boiling point. Change in the position of substituent attached on alkane may result in either constitutional isomerism or geometrical isomerism if present below or above the plane.

Alkanes not having any charge separation due to the absence of atoms of different electronegativity and thus they are non polar.

Expert Solution
Check Mark

Answer to Problem 31P

The given statement is false.

Explanation of Solution

Majorly alkane mostly having density lower than water or less than 1 g /cc. Thus, alkane having less density than water.

Conclusion

Hence, alkane having less density than water.

Interpretation Introduction

(c)

Interpretation:

Interpret the following statement is true or false.

‘Cis and trans isomer have same physical properties with same molecular formula’.

Concept Introduction:

Alkane is a long chain of carbon linked with only single bond between each carbon. Its general formula is Cn H2n +2 where, n is number of carbon atom.

Moreover, straight chain have large surface area which increases the possibility of area of contact with other chain which results in higher vander waal forces between them and thus increases the boiling point. Change in the position of substituent attached on alkane may result in either constitutional isomerism or geometrical isomerism if present below or above the plane.

Alkanes not having any charge separation due to the absence of atoms of different electronegativity and thus they are non polar.

Expert Solution
Check Mark

Answer to Problem 31P

The given statement is false.

Explanation of Solution

Cis and trans isomer belongs to same molecular formula but having different physical properties such as different color or different odor.

Conclusion

Hence, Cis and trans isomer having different physical properties.

Interpretation Introduction

(d)

Interpretation:

Interpret the following statement is true or false.

‘Least branched isomer has lowest boiling point’.

Concept Introduction:

Alkane is a long chain of carbon linked with only single bond between each carbon. Its general formula is Cn H2n +2 where, n is number of carbon atom.

Moreover, straight chain have large surface area which increases the possibility of area of contact with other chain which results in higher vander waal forces between them and thus increases the boiling point. Change in the position of substituent attached on alkane may result in either constitutional isomerism or geometrical isomerism if present below or above the plane.

Alkanes not having any charge separation due to the absence of atoms of different electronegativity and thus they are non polar.

Expert Solution
Check Mark

Answer to Problem 31P

The given statement is true.

Explanation of Solution

The compound containing longest parent chain of carbon having high boiling point due to the bulkiness of the structure while the compound containing shortest parent chain of carbon having low boiling point.

More branched isomer having lowest boiling point due to the decrease in surface area and thus less bonding between the molecules appear which result in decrease in boiling point.

Conclusion

Hence, least branched isomer has lowest boiling point.

Interpretation Introduction

(e)

Interpretation:

Interpret the following statement is true or false.

‘Alkanes and cycloalkane are not soluble in water’.

Concept Introduction:

Alkane is a long chain of carbon linked with only single bond between each carbon. Its general formula is Cn H2n +2 where, n is number of carbon atom.

Moreover, straight chain have large surface area which increases the possibility of area of contact with other chain which results in higher vander waal forces between them and thus increases the boiling point. Change in the position of substituent attached on alkane may result in either constitutional isomerism or geometrical isomerism if present below or above the plane.

Alkanes not having any charge separation due to the absence of atoms of different electronegativity and thus they are non polar.

Expert Solution
Check Mark

Answer to Problem 31P

The given statement is true.

Explanation of Solution

Alkane and cycloalkane are non polar in nature and thus not be able to create hydrogen bonds water which results in insolubility in water.

Conclusion

Hence, Alkane and cycloalkane having insolubility in water.

Interpretation Introduction

(f)

Interpretation:

Interpret the following statement is true or false.

‘Alkanes are soluble in each other’.

Concept Introduction:

Alkane is a long chain of carbon linked with only single bond between each carbon. Its general formula is Cn H2n +2 where, n is number of carbon atom.

Moreover, straight chain have large surface area which increases the possibility of area of contact with other chain which results in higher vander waal forces between them and thus increases the boiling point. Change in the position of substituent attached on alkane may result in either constitutional isomerism or geometrical isomerism if present below or above the plane.

Alkanes not having any charge separation due to the absence of atoms of different electronegativity and thus they are non polar.

Expert Solution
Check Mark

Answer to Problem 31P

The given statement is true.

Explanation of Solution

Liquid alkane are soluble in each other and in other organic solvent due to similar nature.

Conclusion

Hence, liquid alkane are soluble in each other.

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Chapter 11 Solutions

Introduction to General, Organic and Biochemistry

Ch. 11 - 11-12 Why is it not accurate to describe an...Ch. 11 - 11-13 What is meant by the term line-angle formula...Ch. 11 - Prob. 4PCh. 11 - Write the molecular formula for each alkane.Ch. 11 - Answer true or false. Constitutional isomers have...Ch. 11 - Which statements are true about constitutional...Ch. 11 - Prob. 8PCh. 11 - Each member of the following set of compounds is...Ch. 11 - Prob. 10PCh. 11 - 11-21 In the six following sets, which pairs of...Ch. 11 - Draw line-angle formulas for the nine...Ch. 11 - Answer true or false. The parent name of an alkane...Ch. 11 - Prob. 14PCh. 11 - Among the ingredients listed in one commercial...Ch. 11 - Prob. 16PCh. 11 - Answer true or false. Cycloalkanes are saturated...Ch. 11 - Prob. 18PCh. 11 - Prob. 19PCh. 11 - Prob. 20PCh. 11 - Prob. 21PCh. 11 - 11-32 Calculate the actual C-C-C bond angles in...Ch. 11 - Prob. 23PCh. 11 - 11-34 What structural feature of cycloalkanes...Ch. 11 - Prob. 25PCh. 11 - 11-36 Name and draw structural formulas for the...Ch. 11 - Name and draw structural formulas for the six...Ch. 11 - 11-38 Why is equatorial methylcyclohexane more...Ch. 11 - Prob. 29PCh. 11 - Consider a cyclohexane ring substituted with one...Ch. 11 - Prob. 31PCh. 11 - Prob. 32PCh. 11 - Which unbranched alkane (Table 11-4) has about the...Ch. 11 - Prob. 34PCh. 11 - Prob. 35PCh. 11 - Prob. 36PCh. 11 - Prob. 37PCh. 11 - 11-48 How are the boiling points of hydrocarbons...Ch. 11 - Answer true or false. Combustion of alkanes is an...Ch. 11 - 11-50 Write balanced equations for the combustion...Ch. 11 - The heat of combustion of methane, a component of...Ch. 11 - 11-52 Draw structural formulas for these...Ch. 11 - Prob. 43PCh. 11 - 11-54 Complete and balance the equation for the...Ch. 11 - Name and draw structural formulas for all pos...Ch. 11 - Prob. 46PCh. 11 - Prob. 47PCh. 11 - 11-58 (Chemical Connections 11A) How many rings in...Ch. 11 - Prob. 49PCh. 11 - Prob. 50PCh. 11 - Prob. 51PCh. 11 - 11-62(Chemical Connections 11C) What are Freons?...Ch. 11 - 11-63 (Chemical Connections 11C) In what way do...Ch. 11 - (Chemical Connections 11C) What are HFCs and...Ch. 11 - Prob. 55PCh. 11 - Prob. 56PCh. 11 - Prob. 57PCh. 11 - Prob. 58PCh. 11 - Which of the following compounds can exist as...Ch. 11 - Prob. 60PCh. 11 - Dodecane, C12H26, is an unbranched alkane Predict...Ch. 11 - Prob. 62PCh. 11 - Prob. 63PCh. 11 - Prob. 64PCh. 11 - As stated in Section 11-9, the wax found in apple...Ch. 11 - Prob. 66PCh. 11 - Prob. 67P
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