The Dissociation Equilibrium Constants for the Protonated Form of Alanine

question 162

Multiple Choice

The dissociation equilibrium constants for the protonated form of alanine (a diprotic amino acid H₂X⁺) are K_a1 = 4.6 × 10^-3 and K_a2 = 2.0 × 10^-10.What is the pH of 50.00 mL of a 0.100 M solution of alanine after 100.00 mL of 0.100 M NaOH has been added?

• A)9)70
• B)10.69
• C)11.11
• D)12.70

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Definitions:

Endocrine System

The collection of glands that produce hormones to regulate metabolism, growth and development, tissue function, sexual function, reproduction, sleep, and mood, among other things.

Hormones

Chemical messengers secreted by endocrine glands that regulate various physiological processes in the body.

Lymphatic System

The network of organs, lymph nodes, ducts, and vessels that produce and transport lymph from tissues to the bloodstream, important for the immune system.

Interstitial Fluid

Interstitial fluid is the fluid that surrounds the cells in tissues, providing them with nutrients and a means of waste removal, lying between blood vessels and cells.