17. Despite both being nonpolar hydrocarbons, why is ethane a gas a room temperature when nepano is a liquid? (A) Ethane has more sigma bonds to reinforce the carbon chain. (B) ) Heptane's longer chain has a larger electron cloud and more surface area available for instantaneous attractions than ethane. (C) (C) Heptane's longer chain with more C-H bonds has more opportunities for hydrogen bonding to form than ethane. (D) Heptane has a carbon chain that is further apart making it less stable. 18 Which of the fo11
17. Despite both being nonpolar hydrocarbons, why is ethane a gas a room temperature when nepano is a liquid? (A) Ethane has more sigma bonds to reinforce the carbon chain. (B) ) Heptane's longer chain has a larger electron cloud and more surface area available for instantaneous attractions than ethane. (C) (C) Heptane's longer chain with more C-H bonds has more opportunities for hydrogen bonding to form than ethane. (D) Heptane has a carbon chain that is further apart making it less stable. 18 Which of the fo11
Biochemistry
9th Edition
ISBN:9781319114671
Author:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Publisher:Lubert Stryer, Jeremy M. Berg, John L. Tymoczko, Gregory J. Gatto Jr.
Chapter1: Biochemistry: An Evolving Science
Section: Chapter Questions
Problem 1P
Related questions
Question
![INTERPARTICLE FORCES
123
17. Despite both being nonpolar hydrocarbons, why is ethane a gas a room temperature when heptano
is a liquid?
(A) Ethane has more sigma bonds to reinforce the carbon chain.
(B) Heptane's longer chain has a larger electron cloud and more surface area available for
instantaneous attractions than ethane.
(C) Heptane's longer chain with more C-H bonds has more opportunities for hydrogen bonding to
form than ethane.
(D) Heptane has a carbon chain that is further apart making it less stable.
18. Which of the following would be expected to have the lowest vapor pressure at 25°C?
(A) N2
(B) Cl,
(С) Brz
(D) 2
boludite od net
19. In which of the following pairs of substances is the substance with the higher expected melting point
listed first?
(A) KCl or NaCl
(B) Mg or AI
(C) Ba or Cs
(D) Ar or Kr
1o ianoo letevgo o qu sler isrdi aleioq soitel ad HOo ltecio a nl AS
20. Which of the substances below would be expected to have the lowest boiling point at 1 atm pressure?
(D) KOH
(A) (bent) F-O-F
52
(D) [Li*][CH]
Conbonag
21. Which factor(s) account for the observed difference in boiling points for the compounds below?
Ethane CH,CH,
Propane CH,CH,CH,
Compound
-42°C
-89°C
Boiling point
(G)
(D) 1o0-orboje
(A) stronger dipole-dipole attractions between propane molecules
(B) a larger number of covalent bonds within the propane molecule
(C) a larger molar mass and more internal bonding in propane molecules
(D) a larger surface area and larger electron cloud in propane molecules](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F5e3eb5b9-70f9-4c46-81e8-c844c47acf22%2F374b8233-053e-4179-8947-73b6f3173002%2F64txdxs.jpeg&w=3840&q=75)
Transcribed Image Text:INTERPARTICLE FORCES
123
17. Despite both being nonpolar hydrocarbons, why is ethane a gas a room temperature when heptano
is a liquid?
(A) Ethane has more sigma bonds to reinforce the carbon chain.
(B) Heptane's longer chain has a larger electron cloud and more surface area available for
instantaneous attractions than ethane.
(C) Heptane's longer chain with more C-H bonds has more opportunities for hydrogen bonding to
form than ethane.
(D) Heptane has a carbon chain that is further apart making it less stable.
18. Which of the following would be expected to have the lowest vapor pressure at 25°C?
(A) N2
(B) Cl,
(С) Brz
(D) 2
boludite od net
19. In which of the following pairs of substances is the substance with the higher expected melting point
listed first?
(A) KCl or NaCl
(B) Mg or AI
(C) Ba or Cs
(D) Ar or Kr
1o ianoo letevgo o qu sler isrdi aleioq soitel ad HOo ltecio a nl AS
20. Which of the substances below would be expected to have the lowest boiling point at 1 atm pressure?
(D) KOH
(A) (bent) F-O-F
52
(D) [Li*][CH]
Conbonag
21. Which factor(s) account for the observed difference in boiling points for the compounds below?
Ethane CH,CH,
Propane CH,CH,CH,
Compound
-42°C
-89°C
Boiling point
(G)
(D) 1o0-orboje
(A) stronger dipole-dipole attractions between propane molecules
(B) a larger number of covalent bonds within the propane molecule
(C) a larger molar mass and more internal bonding in propane molecules
(D) a larger surface area and larger electron cloud in propane molecules
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