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Chapter 2: 2.7 (page 66)

Which compound in each pair is the strongest acid?

a.

or

b.

or

Short Answer

Expert verified

a. Ethanol is a stronger compound.

b. Phenol is a stronger compound.

Step by step solution

01

Acids

Acids take part in numerous reactions in chemistry. They can be strong or weak and their definition varies as per the theories provided.

Hydrogen ions are liberated when acids are in contact with water which is an important characteristic of acid.

02

Comparison of compounds in a

The pKa values of propane and ethanol are 50 and 16, respectively. The compound with a lower pKavalue is a stronger acid.

As ethanol has a lower pKavalue than propane, it is a stronger acid.

03

Comparison of compounds in b

The Ka values of phenol and toluene are 10-10 and 10-41 , respectively. The compound with a higher Ka value is a strong acid.

As phenol has a higher Kavalue than toluene, it is a stronger acid.

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Most popular questions from this chapter

Classify each reaction as either a proton transfer reaction, or a reaction of a nucleophile with an electrophile. Use curved arrows to show how the electron pairs move.

Consider two acids:HCO2H (formic acid, pKa=3.8)and pivalic acid [CH3CCO2H,pKa=5.0].

(a)Which acid has the larger Ka? (b)Which acid is the stronger acid? (c) Which acid forms the stronger conjugate base?(d)When acid is dissolved in water, for which acid does the equilibrium lie further to the right?

Classify each compound as a Lewis base, a Br酶nsted -Lowry base, both or neither.

a.

b.

c.

d.

Which compounds can be deprotonated by OH-, so that equilibrium favors the products? Refer to the pKa table in Appendix A.

a.HCOOH

b. H2S

c.

d.CH3NH2

Draw the products of each proton transfer reaction. Label the acid and base in the starting materials, and the conjugate acid and base in the products.

a.

b.

c.

d.
See all solutions

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