Three Acids Found in Foods Are Lactic Acid (In Milk

question 50

Multiple Choice

Three acids found in foods are lactic acid (in milk products) , oxalic acid (in rhubarb) , and malic acid (in apples) . The pK_a values are LA = 3.88, OA = 1.23, and MA = 3.40. Which list has the conjugate bases of these acids in order of decreasing strength?

• A) lactate > oxalate > malate
• B) oxalate > malate > lactate
• C) lactate > malate > oxalate
• D) oxalate > lactate > malate
• E) malate > lactate > oxalate

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