Consider the Weak Bases Below and Their K_b Values Arrange the Conjugate Acids of These Weak Bases in Order

question 142

Multiple Choice

Consider the weak bases below and their K_b values: $\begin{array}{ll}\mathrm{C}_{6} \mathrm{H}_{7} \mathrm{O} & \mathrm{~K}_{\mathrm{b}}=1.3 \times 10^{-10} \\\mathrm{C}_{2} \mathrm{H}_{5} \mathrm{NH}_{2} & \mathrm{~K}_{\mathrm{b}}=5.6 \times 10^{-4} \\\mathrm{C}_{5} \mathrm{H}_{5} \mathrm{~N} & \mathrm{~K}_{\mathrm{b}}=1.7 \times 10^{-9}\end{array}$ Arrange the conjugate acids of these weak bases in order of increasing acid strength.

• A) C₅H₅NH⁺ < C₆H₇OH < C₂H₅NH
• B) C₆H₇OH < C₅H₅NH⁺ < C₂H₅NH
• C) C₅H₅NH⁺ < C₂H₅NH₃⁺ < C₆H₇OH
• D) C₆H₇OH < C₂H₅NH₃⁺< C₅H₅NH⁺
• E) C₂H₅NH₃⁺< C₅H₅NH⁺ < C₆H₇OH

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Definitions:

Ossicles

Small bones in the middle ear that transmit sound from the air to the fluid-filled labyrinth (cochlea).

Inner Ear

The innermost part of the ear, consisting of the cochlea, vestibule, and semicircular canals, crucial for hearing and balance.

Sensorineural

Related to or involving both sensory and neural mechanisms, often used to describe a type of hearing loss that results from damage to the inner ear or auditory nerve.

Conductive

Relating to the transmission of heat, sound, or electricity.