Concept explainers
(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.
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.
Hence, boiling point of alkane increases with number of carbon.
(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.
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.
Hence, alkane having less density than water.
(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.
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.
Hence, Cis and trans isomer having different physical properties.
(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.
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.
Hence, least branched isomer has lowest boiling point.
(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.
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.
Hence, Alkane and cycloalkane having insolubility in water.
(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.
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.
Hence, liquid alkane are soluble in each other.
Want to see more full solutions like this?
Chapter 11 Solutions
INTRO.TO GENERAL,ORGAN...-OWLV2 ACCESS
- Summarize the nomenclature rules for alkanes, alkenes, alkynes, and aromatic compounds. Correct the following false statements regarding nomenclature of hydrocarbons. a. The root name for a hydrocarbon is based on the shortest continuous chain of carbon atoms. b. The suffix used to name all hydrocarbons is -ane. c. Substituent groups are numbered so as to give the largest numbers possible. d. No number is required to indicate the positions of double or triple bonds in alkenes and alkynes. e. Substituent groups get the lowest number possible in alkenes and alkynes. f. The ortho- term in aromatic hydrocarbons indicates the presence of two substituent groups bonded to carbon- 1 and carbon-3 in benzene.arrow_forwardHow does the structure of a cycloalkane differ from that of a straight-chain or branched-chain alkane?arrow_forwardWhat is the difference in bonding and in general molecular formula between an alkene and a cycloalkane with the same number of carbon atoms?arrow_forward
- . Alkenes and alkynes are characterized by their ability to undergo rapid, complete reactions, by which other atoms attach themselves to the carbon atoms of the double or triple bond.arrow_forwardGasohol is a mixture of 90% gasoline and 10% ethanol, CH 3CH 2OH. Ethanol is considered an environmentally friendly fuel additive because it can be made from a renewable source—sugarcane. Ethanol burns in air to form CO 2 and H 2O, and, like the combustion of alkanes, this reaction also releases a great deal of energy. Write a balanced equation for the combustion of ethanol.arrow_forward1. a. Draw and name the five cycloalkane structures of formula C5H10. Can any of these structures give rise to geometric (cis-trans) isomerism? If so, show the cis and trans stereoisomers. b. Draw and name the eight cycloalkane structures of formula C6H12 that do not show geometric isomerism. c. Draw and name the four cycloalkanes of formula C6H12 that do have cis-trans isomers. 2. Each of the following descriptions applies to more than one alkane. In each case, draw and name two structures that match the description. (a) an isopropylheptane (b) a diethyldecane (c) a cis-diethylcyclohexane (d) a trans-dihalocyclopentane (e) a (2,3-dimethylpentyl)cycloalkane (f) a bicyclononane 3. 2. refer to the photo attached and answer the ff.3-33, 3-34arrow_forward
- Draw three cycloalkanes which are structural (constitutional) isomers of C6H12. At least one of these structures must be able to show cis/trans isomerism. Mark this example with an asterisk.arrow_forwardAlkenes and alkynes react similarly to each other. Hydrogenation, halogenation, and hydration reactions are all types of addition reactions in which the reagent adds across the multiple bond of the reactant • Hydrogenation is the addition of hydrogen gas in the presence of a catalyst such as platinum, palladium, or nickel. • Halogenation involves a reaction with a halogen such as Cl₂ or Br₂ to produce a dihaloalkane or dihaloalkene product. Hydration reactions take place when alkenes or alkynes react with water in the presence of a strong acid catalyst to yield an alcohol. ▼ Part A Predict the product of the reaction of 1-butene with bromine. Enter the IUPAC name. ▸ View Available Hint(s) Submit ▾ Part B An alkyne undergoes hydrogenation to produce an alkane as follows: 04 RC=CR + 2H₂ Q Pd catalyst alkane Predict the product and draw it. Draw the molecule by placing atoms on the grid and connecting them with bonds. Include all hydrogen atoms. To add an R group, double click an while…arrow_forward
- Chemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage LearningOrganic And Biological ChemistryChemistryISBN:9781305081079Author:STOKER, H. Stephen (howard Stephen)Publisher:Cengage Learning,General, Organic, and Biological ChemistryChemistryISBN:9781285853918Author:H. Stephen StokerPublisher:Cengage Learning
- ChemistryChemistryISBN:9781305957404Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCostePublisher:Cengage LearningChemistry: An Atoms First ApproachChemistryISBN:9781305079243Author:Steven S. Zumdahl, Susan A. ZumdahlPublisher:Cengage Learning