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Chapter 2: Q. 2.39 (page 85)

What is the conjugate base of each acid?
a. ${HCO}^{3 -}$
b.
c.
d.

Short Answer

Expert verified

a. ${CO}_{3}^{2 -}$

b. role="math" localid="1649233356230" ${CH}_{3} {CH}_{2} {CH}_{2} {CH(NH}_{2} {)CH}_{3}$

c. ${CH}_{3} {CH}_{2} {CH}_{2} {COO}^{-}$

d. $C_{8} H_{11}^{-}$

Step by step solution

01

Acid

An acid releases the acidic proton and forms its conjugate base.

02

Conjugate base

The conjugate base is formed by the proton release from an acid.

03

Formation of the conjugate base

a. The acid ${HCO}^{3 -}$ releases the proton and forms its conjugate base ${CO}_{3}^{2 -}$ .

b. The acid ${CH}_{3} {CH}_{2} {CH}_{2} {CH(NH}_{3}^{+} {)CH}_{3}$ releases its proton and forms its conjugate base ${CH}_{3} {CH}_{2} {CH}_{2} {CH(NH}_{2} {)CH}_{3}$ .

Conjugate base

c. The acid ${CH}_{3} {CH}_{2} {CH}_{2} COOH$ releases its proton and forms its conjugate acid ${CH}_{3} {CH}_{2} {CH}_{2} {COO}^{-}$ .

Conjugate base

d. The acid $C_{8} H_{12}$ the proton and forms its conjugate acid $C_{8} H_{11}^{-}$ .

Conjugate base

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Most popular questions from this chapter

Answer the following questions about esmolol, a drug used to treat high blood pressure sold under the trade name Brevibloc.

a. Label the most acidic hydrogen atom

b. What products are formed when esmolol is treated with NaH?

c. What products are formed when esmolol is treated with HCl?

d. Label all ${sp}^{2}$ hybridized C atoms. in esmolol.

e. Label the only trigonal pyramidal atom.

f. Label all C’s that bear a $δ^{+}$ charge.

DBU, 1,8-diazabicyclo $[5.4.0]$ undec-7-ene, is a base we will encounter in elimination reactions in Chapter 8. Which N atom is more basic in DBU? Explain your choice.

Which compound in each pair is the strongest acid?

a.

or

b.

or

Draw the products of each reaction. Use the ${pK}_{a}$ table in Appendix A to decide if the equilibrium favors the starting materials or products.

a. $CH3NH2+H2SO4⇄$

b.

role="math" localid="1649245938016" $+NaCl⇄$

c.

role="math" localid="1649246055871" $+NaHCO3⇄$

d.role="math" localid="1649246063128" ${H-C≡C-H+CH}_{3} {CH}_{2} {}^{-}{Li}^{+} ⇄$

Classify each compound as a Lewis acid, a Brønsted-Lowry acid, both or neither.

a. $H_{3} O^{+}$

b.role="math" localid="1649255146903" ${Cl}_{3} C^{+}$

c. ${BCl}_{3}$

d. ${BF}_{4}^{-}$

See all solutions

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