Exam (elaborations)
Knewton's Alta Module 13 test- with Questions with 100% Correct Answers
- Course
- Institution
Knewton's Alta Module 13 test- with Questions with 100% Correct Answers
[Show more]
Seller
Follow
Content preview
Knewton's Alta Module 13 test- withQuestions with 100% Correct Answers
Covalent electrolytes are typically:
A) strong acid
B) weak electrolytes
C) ionic electrolytes
D) depends on the substance - Answer D) depends on the substance
Covalent electrolytes can be strong or weak, depending on the strength of the acid
or base. Strong acids and bases are typically strong electrolytes. Nonelectrolytes do
not dissociate into ions in solution; nonelectrolyte solutions do not, therefore,
conduct electricity.
What types of interactions occur between ions and water molecules that promote
the dissolution process?
A) ion-ion
B) ion-dipole
C) dipole-dipole
D) ionic bonding - Answer B) ion-dipole
Identify the option below that is not true of ionic electrolytes.
A) They must be ionic compounds.
B) They are often soluble in water.
,C) They must be completely soluble in water.
D) They yield ions by their dissociation in water. - Answer C) They must be completely
soluble in water.
A) a chemical change that yields ions
B) a physical change that yields ions
C) either of the above
D) neither of the above - Answer C) either of the above
True of false: a strong electrolyte always forms a very concentrated solution and a
weak electrolyte always forms a very dilute solution. - Answer False
Which of the following are true regarding dissociation?
A) During dissociation, water molecules surround and solvate ions.
B) Dissociation decreases the electrostatic attractions between ions.
C) Dissociation is a physical process.
D) Ionic compounds rarely dissociate completely. - Answer A, B, & C
Which substance, when dissolved in water, will conduct the most electricity?
A) ethanol
B) potassium chloride
C) acetic acid
D) ammonia - Answer B) potassium chloride
Which of the following occurs when an ionic compound dissolves in a polar solvent
such as water?
A) The water molecules chemically react with the ions.
, B) The disorder of the ionic salt is decreased.
C) The water molecules attract both the anions and cations in the ionic salt.
D) The ions become solvated water molecules, which reduces the electrostatic
attractions between the ions. - Answer A&D
Of the following, which are characteristics of weak electrolytes?
A) They produce a low concentration of ions when dissolved in water.
B) They are soluble in water.
C) They exhibit no conductivity.
D) They exhibit low conductivity. - Answer A, B, and D
If a compound undergoes a chemical reaction and the reaction is essentially
100% complete, the compound could have been a: (select all that apply)
A) weak acid
B) strong acid
C) weak base
D) strong base - Answer B and D
Which of the following are not true of covalent electrolytes?
A) They contain only covalent bonds.
B) They may contain ions.
C) All soluble covalent compounds are covalent electrolytes.
D) Solutions prepared from covalent compounds conduct electricity. - Answer B and C
Which of the following gives the definition of ion-dipole attraction?
A) Ion-dipole attraction is attraction between an ion and the polar bond(s) in a
nonpolar molecule.
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 KenAli. 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.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
84866 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now