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Citric acid is the stronger acid of the two because the molecule has three acid groups as opposed to malic acid which has only two. Citric acid will therefore dissociate more easily.

From personal experience, malic acid is the more strongly flavoured though!

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12y ago
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13y ago

Well, citric acid is a tri-protic weak acid, 1st pKa1=3.09, 2nd pKa2=4.75 and 3rd pKa3=5.41.

Lactic acid is mono protic weak: pKa 3.86

So lactic acid is weaker than the first (most important, 3.09) one of citric acid.

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12y ago

Both malic acid and citric acid are, surprisingly, acids. They are naturally occurring in many fruits and vegetables, and are often added to other foods to change their flavours.

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13y ago

tartaric acid

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13y ago

hi people

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12y ago

Weak

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