a) CH3(CH2)29CH3, a component found in paraffin wax is a solid at room temperature while octane is a liquid.
Interpretation:
The observation that, CH3(CH2)29CH3, a component found in paraffin wax is a solid at room temperature while octane is a liquid is to be explained.
Concept introduction:
Even in non polar molecules, the attractive dispersion forces are possible, caused by temporary dipoles arising due to the costant change in electon distribution wihin the molecule. These temporary dipoles, though have a fleeting existence are constantly changing. But their cumulative effect may be strong enough to hold the molecule close together so that a substance can be a solid or liquid.
To explain:
The observation that, CH3(CH2)29CH3, a component found in paraffin wax is a solid at room temperature while octane is a liquid.
b) CH3CH2CH2OH has a higher boiling point than CH4
Interpretation:
The observation CH3CH2CH2OH has a higher boiling point than CH4.
Concept introduction:
An attractive interaction between a hydrogen bonded to an electronegative oxygen or nitrogen atom and an unshared electron pair on another oxygen or nitrogrn atom is termed as hydrogen bonding. It is a very strong dipole-dipole interaction that leads to molecular association. These molecules associated through hydrogen bonding will have a high boiling point.
To explain:
The observation CH3CH2CH2OH has a higher boiling point than CH4.
c) CH3CO2H, which is found in vinegar, will dissolve in water but not in oil- for simplicity you may assume oil is CH3(CH2)4CH3
Interpretation:
The observation that CH3CO2H, which is found in vinegar, will dissolve in water but not in oil with molecular formula CH3(CH2)4CH3.
Concept introduction:
Like dissolves like. A polar molecule will dissolve in another polar solvent. The solubility can also be explained using the formation of hydrogen bonding between the two substances.
Want to see the full answer?
Check out a sample textbook solutionChapter 2 Solutions
Organic Chemistry
- What types of intermolecular forces are present in each compound: (a) HCl; (b) C 2H 6 (ethane); (c) NH 3?arrow_forwardChemistry 1. Glycerol, CH2(OH)CH(OH)CH2OH, has a 3 carbon chain with -OH groups coming off of each carbon. This thick, syrup like liquid is used in anti-freeze and as a food additive. Hexaoctane, C18H38, is a greasy wax-like solid at room temperature. Using this information rank molecules in order of increasing boiling point and justify your answer: PCl2F, H2O, SeS3, MgS, Glycerol, CH4, CaS, PF2Cl, Hexaoctane, Nearrow_forward7The substance with the lowest known boiling point (4 K) is helium, an atomic element that has two electrons. Hydrogen is a diatomic molecule and also has two electrons, but its boiling point is significantly higher, at 20.28 K. (a) What is the dominant intermolecular force between a pair of helium atoms and a pair of H2 molecules? (b) Why do you think H2 has a higher boiling point?arrow_forward
- Which compound would have the lowest boiling point? I OV ||| O IV OII OI IV OH II OH V SOH Ш -OHarrow_forwardExplain, using intermolecular forces, why at room temperature, petrol (mainly octane, C8H18) is a liquid, while candle wax (C23H48) is a solidarrow_forwardbha Please don't provide handwritten soluttionarrow_forward
- Which substance has the lower boiling point? Explain.arrow_forward17. Which one of the following substances can be melted without breaking chemical bonds? (a) sodium sulfate (b) zinc chloride (c) sulfur dioxide (d) silicon dioxide (e) diamondarrow_forwardWhich substance has the higher boiling point? Explain.(a) CH₃CH₂OH or CH₃CH₂CH₃(b) NO or N₂(c) H₂S or H₂Tearrow_forward
- Which of these substances would exhibit the highest boiling point at 1.00 atm? (A) CH3CH2CH2CH3 (B) CH3CH2Cl (C) CH3OH (D) CH3CH2OHarrow_forwardQ2.2a - Identify the type of atomic bonds and intermolecular attractions present in each of the following scenarios: A compound made of positively-charged magnesium and negatively-charged sulfide atoms. The balanced bonds holding together the carbons and hydrogens in a molecule of Ethane. Hydrogen Fluoride is added to an aqueous solution. It dissolves due to interactions between partially-charged atoms in the Hydrogen Fluoride and Water molecules. The fatty acid tails on phospholipids are strongly attracted to each other because they are strongly repelled by water. This allows them to form phospholipid bi-layer structures. Ethanol contains an alcohol group with an oxygen atom that is strongly electronegative. This causes the molecule's electrons to be unbalanced, resulting in a partially-charged molecule. Hydrogen Attraction Non-polar Covalent Bond lonic Bond Hydrogen Attraction Polar Covalent Bond 4 >arrow_forwardThe surface tension and viscosity values for diethyl ether, acetone, ethanol, and ethylene glycol are shown here. (a) Explain their differences in viscosity in terms of the size and shape of their molecules and their IMFs. (b) Explain their differences in surface tension in terms of the size and shape of their molecules and their IMFs:arrow_forward
- Chemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage LearningChemistry: Principles and ReactionsChemistryISBN:9781305079373Author:William L. Masterton, Cecile N. HurleyPublisher:Cengage LearningPrinciples of Modern ChemistryChemistryISBN:9781305079113Author:David W. Oxtoby, H. Pat Gillis, Laurie J. ButlerPublisher:Cengage Learning
- Chemistry by OpenStax (2015-05-04)ChemistryISBN:9781938168390Author:Klaus Theopold, Richard H Langley, Paul Flowers, William R. Robinson, Mark BlaserPublisher:OpenStaxGeneral Chemistry - Standalone book (MindTap Cour...ChemistryISBN:9781305580343Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; DarrellPublisher:Cengage LearningIntroductory Chemistry: A FoundationChemistryISBN:9781337399425Author:Steven S. Zumdahl, Donald J. DeCostePublisher:Cengage Learning