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Chapter 2: Q. 2.55 (page 87)

a. What is the conjugate acid of A?
b. What is the conjugate base of A?

Short Answer

Expert verified

The compound generated when an acid has contributed its proton is referred to as a conjugate acid.For example, $H_{3} O^{+}$ is regarded as the conjugate acid of $H_{2} O$ .

Step by step solution

01

Conjugate acid

The compound generated when an acid has contributed its proton is referred to as a conjugate acid.For example, $H_{3} O^{+}$ is regarded as the conjugate acid of $H_{2} O$ .

02

Conjugate base

The compound generated when abase has acquired a proton is referred to as a conjugate base. For example, $F^{-}$ ion is regarded as the conjugate base of HF.

03

Identifying the conjugate acid and base in the compound

a. The conjugate acid can be drawn by identifying the most basic site, followed by its protonation.

Identification of conjugate acid

b. The conjugate base can be drawn by identifying the most acidic site followed by removing a proton from the acidic site.

Identification of conjugate base

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Most popular questions from this chapter

Rank the compounds in each group in order of increasing acidity.

a.

b.

c.

For each reaction, label the Lewis acid and base. Use curved arrow notation to show the movement of electron pairs.

a.

b.

Estimate the ${pK}_{a}$ of each of the indicated bonds.

a.

b.

c.

Glycolic acid, ${HOCH}_{2} {CO}_{2} H$ , is the simplest member of a group of compounds called α-hydroxy acids, ingredients in skin care products that have an OH group on the carbon adjacent to a ${CO}_{2} H$ group. Would you expect ${HOCH}_{2} {CO}_{2} H$ to be a stronger or weaker acid than acetic acid, ${CH}_{3} {CO}_{2} H$ ?

Acetonitrile $({CH}_{3} CN)$ has a ${pK}_{a}$ of 25, making it more acidic than many other compounds having only C-H bonds. Draw Lewis structures for acetonitrile and its conjugate base. Use resonance structures to account for the acidity of acetonitrile.

See all solutions

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