FiltersDone

Question type

Essay

Multiple Choice

Short Answer

True False

Matching

Exam 2: Acids and Bases

Show Answer

Share

---

All types

Filters

Study FlashcardsPractice ExamLearn

Question 1

Multiple Choice

Review LaterAdd Note

Review Later

Which equilibria have equilibrium constants smaller than 1.0?

A) II
B) I, IV
C) III, IV
D) I

Correct Answer

verified

Show Answer

Question 2

Multiple Choice

Review LaterAdd Note

Review Later

Which is the proper reaction mechanism for the reaction of boron trifluoride and diethyl ether? Assume that the charges are correct and add electron pairs, if needed. Also consider how many electrons should be in the outer shell of boron trifluoride to make it neutral.

A) I
B) II
C) III
D) IV

Correct Answer

verified

B

Question 3

Multiple Choice

Review LaterAdd Note

Which is the stronger base if the equilibrium lies to the right? (Sec. 2.4, HARD)

The strongest acid in the following list is sodium bicarbonate.

Arrange the following species in order of increasing basicity (weakest to strongest) . I. OH^- II. Cl^- III. H₂O IV. NH₃

The equilibrium constant will be greater than 1.0 for the following reaction

Which statements about acid-base equilibria are true? I. The pKa is the negative log₁₀ of the acid equilibrium constant. II. A stronger acid has a pKa with a smaller value than a weaker acid. III. The stronger the base, the smaller the pKa of its conjugate acid. IV. The Ka = K [HA].

Which of these has the lowest numerical value of pKa and is therefore the strongest acid?

Lewis bases donate electrons when reacting.

Which is the order of decreasing acid strength of the following compounds (greatest first) ?

List the bonds in order of decreasing acidity (most to least) .

Complete the following reaction scheme with the appropriate equilibrium arrow (indicating the higher concentrations at equilibrium).

What is the role of methanol (CH₃OH) in the following reaction?

Which equilibria have equilibrium constants greater than 1.0?

What is the role of water in the following reaction?

Ammonia acts as a Brønsted-Lowry base in the following reaction.

Identify the acid, base, conjugate acid, conjugate base in the following reaction.

Which are acid-base reactions according to Brønsted-Lowry theory?

Which are acid-base reactions according to Lewis theory but not according to the Brønsted-Lowry theory?

Identify the Arrhenius bases: I. NH₃ II. NaOH III. HI IV. Ca(OH) ₂