Imagine a beaker with octanol layered on top of water. Acetic acid (CH3COOH) dissolves partially in...

Question

Question

Imagine a beaker with octanol layered on top of water. Acetic acid (CH₃COOH) dissolves partially in both the octanol and water.

CH₃COOH (aq) <-> H⁺ (aq) + CH₃COO⁻ (aq) K_a = 1.8×10^-4, pK_a = 4.8

CH₃COOH (aq) <-> CH₃COOH (octanol) K_OW = 0.60

Which of the scenarios would result in the largest concentration of acetic acid in water?

science chemistry

Answer 1

Answer #1

Acetic acid is better soluble in octanol when it is un-ionized fo due to the long chain of octanol.

Now, the partition coefficient dictates that acetic acid has lesser quantity in octanol in un-ionized form.

Addition of base in water will ionize acetic acid and it will drain the acetic acid that was present in octanol.

By this largest quantity of acetic acid in water can result.

Answer 2

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