1 answer

Benzoic acid is a weak acid that has antimicrobial properties. Its sodium salt, sodium benzoate, is...

Question:

Benzoic acid is a weak acid that has antimicrobial properties. Its sodium salt, sodium benzoate, is a preservative found in foods, medications, and personal hygiene products. Benzoic acid dissociates in water:

C6H5COOH⇌C6H5COO−+H+

The pKa of this reaction is 4.2. In a 0.76 M solution of benzoic acid, what percentage of the molecules are ionized?

Express the percentage numerically using two significant figures.


Answers

+Hア 6-76 0.76-х 309x 0.7 1s) 0.76 0.1เ 6.92 x1o-3지。。 0.76 0.911 7-

.

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