Question

Which of these statements is false, given that pKb of aniline (C6H5NH2) is 9.40? a. The reaction C6H5NH2 + H2O ? C6H5NH3+ + OH- has an equilibrium constant of 4.0x10-10. b. Aniline is a weak base. c. The Ka of aniline is 2.5x10-5. d. The reaction C6H5NH3+ + H2O ? C6H5NH2 + H3O+ has an equilibrium constant of 2.5x10-5. e. Aniline will not react OH- to an appreciable degree. f. The reaction C6H5NH2 + H3O+ ? C6H5NH3+ + H2O has a very large equilibrium constant.

          Which of these statements is false, given that pKb of aniline (C6H5NH2) is 9.40?

a. The reaction C6H5NH2 + H2O ? C6H5NH3+ + OH- has an equilibrium constant of 4.0x10-10.

b. Aniline is a weak base.

c. The Ka of aniline is 2.5x10-5.

d. The reaction C6H5NH3+ + H2O ? C6H5NH2 + H3O+ has an equilibrium constant of 2.5x10-5.

e. Aniline will not react OH- to an appreciable degree.

f. The reaction C6H5NH2 + H3O+ ? C6H5NH3+ + H2O has a very large equilibrium constant.

Which of these statements is false, given that pKb of aniline (C6H5NH2) is 9.40?

a. The reaction C6H5NH2 + H2O ? C6H5NH3+ + OH- has an equilibrium constant of 4.0x10-10.

b. Aniline is a weak base.

c. The Ka of aniline is 2.5x10-5.

d. The reaction C6H5NH3+ + H2O ? C6H5NH2 + H3O+ has an equilibrium constant of 2.5x10-5.

e. Aniline will not react OH- to an appreciable degree.

f. The reaction C6H5NH2 + H3O+ ? C6H5NH3+ + H2O has a very large equilibrium constant.

Added by Melinda B.

Chemistry: Structure and Properties

Nivaldo Tro 2nd Edition

Instant Answer

Solved by Expert Sri K

02/27/2023

Step 1

pKb of aniline is given as 9.402. We can find Kb using the formula: Kb = 10^(-pKb) = 10^(-9.402) ≈ 4.0 x 10^(-10). So, the first statement is true. Show more…

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Which of these statements is false, given that pKb of aniline (C6H5NH2) is 9.40? a. The reaction C6H5NH2 + H2O ⇌ C6H5NH3+ + OH- has an equilibrium constant of 4.0x10-10. b. Aniline is a weak base. c. The Ka of aniline is 2.5x10-5. d. The reaction C6H5NH3+ + H2O ⇌ C6H5NH2 + H3O+ has an equilibrium constant of 2.5x10-5. e. Aniline will not react with OH- to an appreciable degree. f. The reaction C6H5NH2 + H3O+ ⇌ C6H5NH3+ + H2O has a very large equilibrium constant.