UNE - Chem 1011 - Midterm Study Guide Questions With Complete Solutions
1 view 0 purchase
Course
CHEM 1011
Institution
University Of New England (UNE
)
A hydrogen bond is characterized by
A. the attraction of temporary dipoles produced by the random asymmetries in electron motion
B. the electrostatic attraction between the permanent dipoles in any polar molecule
C. the highly concentrated partial charge between an H atom and F, O, or N at...
UNE - Chem 1011 - Midterm Study Guide
Questions With Complete Solutions
A hydrogen bond is characterized by
A. the attraction of temporary dipoles produced by the random
asymmetries in electron motion
B. the electrostatic attraction between the permanent dipoles in
any polar molecule
C. the highly concentrated partial charge between an H atom and
F, O, or N atoms
D. the covalent sharing of electrons between two atoms in a
molecule correct answer: C. the highly concentrated partial
charge between an H atom and F, O, or N atoms
(Ref: Week 1 Quiz)
A. LDF's
B. Dipole-Dipole
D. Covalent Bond
Which of the following will have the strongest dipole-dipole
attractions?
,A. NCl3
B. CCl4
C. BCl3
D. Cl2 correct answer: A. NCl3
(Ref: Week 1 Quiz)
Asymmetrical - Usually have a higher dipole moment
Why not BCl3? Because Nitrogen is more electronegative than
Boron.
A cohesive force
A. is the result of the intermolecular forces that attract identical
molecules
B. is the result of the intermolecular forces that attract different
molecules together
C. is the result of covalent interactions between atoms in a
molecule
D. is always stronger than an adhesive force correct answer: A.
is the result of the intermolecular forces that attract identical
molecules
(Ref: Week 1 Quiz)
, Easy way to remember. Co = mutual so cohesive is identical
molecules.
ΔHvap is
A. the energy change when a substance changes from the liquid
phase to the gas phase
B. the energy change when a substance changes from the solid
phase to the liquid phase
C. the energy change when a substance changes from the liquid
phase to the solid phase
D. the energy change when a substance changes from the solid
phase directly to the gas phase correct answer: A. the energy
change when a substance changes from the liquid phase to the
gas phase
(Ref: Week 1 Quiz)
Liquid → Gas (Vaporization)
Ex: Boiling
A liquid in a tube will form a convex meniscus when
A. the adhesive forces are stronger than the cohesive forces
B. the cohesive forces are stronger than the adhesive forces
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Classroom. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $12.99. You're not tied to anything after your purchase.