Caffeine is a: a. weak acid, with a pKa of ~8.0 b. weak acid, with a pKa of ~0.5 c. weak base, with a pKa of ~8.0 d. weak base, with a pKa of ~0.5

Question

Eileen Summers

Chemistry

21 September, 01:45

Caffeine is a: a. weak acid, with a pKa of ~8.0 b. weak acid, with a pKa of ~0.5 c. weak base, with a pKa of ~8.0 d. weak base, with a pKa of ~0.5

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Answers (1)

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Tamara · Answer 1

Answer: The correct answer is "c" caffeine is a weak base with pka~8.0

Explanation:

Caffeine, C8H10N4O2, are alkaloids, which are amines, which means they are basic in nature. Caffeine occurs naturally in tea leaves, coffee beans and cola nuts. It act as central nervous system stimulant.

It belongs to the methylxanthine family of drug. It acts as a very weak base that reacts with acids to form salt that are readily hydrolysed.