The Purple Color of the Anion Formed in the Ninhydrin

question 59

Multiple Choice

The purple color of the anion formed in the ninhydrin test for α-amino acids is due to:

• A)the attraction of the anion to a metal in a pi-complex.
• B)intermolecular hydrogen bonding.
• C)molecular vibrations.
• D)the highly conjugated nature of the anion.
• E)the color of the ninhydrin.

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Definitions:

Atomic Sentences

Simple sentences that contain no logical connectors and cannot be broken down into smaller components.

Truth Values

The valuation in logic that indicates the truthfulness of a statement, typically identified as 'true' or 'false'.

Truth Table

A mathematical table used in logic to determine the truth values of a logical expression based on all possible combinations of its variables.

Atomic Sentences

Simplest statements in logic that express a complete thought or claim without any logical connectives, capable of being true or false.