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Is ascorbic acid weak

Updated: 8/10/2023
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12y ago

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The acid dissociation constant (Ka) is the measure of strength of an acid in solution. Symbolically, as HA is added to solution it breaks down into a proton (H+) and it's conjugate base (A-). The value of Ka is equal to products over reactants (aqueous only i.e. no solids or liquids) . Once you solve for Ka, you can solve for the pKa which is equal to -logKa. The pKa will determine if the acid is weak or strong. Strong acids are more willing to dissociate in water and have a pKa value of <-2. The pKa of ascorbic acid is only 4.2, and so it is a weak acid.

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12y ago
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14y ago

The pKa of ascorbic acid is only 4.2, so it is a weak acid. You can calculate the percent dissociation of a 0.1 M ascorbic acid solution using its Ka, and you will find that it is a small value.

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10y ago

strong and weak

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Q: Is ascorbic acid weak
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