Three acids found in foods are lactic acid (in milk products), oxalic acid (in r

Question

Three acids found in foods are lactic acid (in milk products), oxalic acid (in rhubarb), and malic acid (in apples). The pKa values are LA = 3.88. OA 1.23, and MA = 3.40. Which list has these acids in order of decreasing acid strength? LA > OA > MA LA > MA > OA OA > MA > LA OA > LA > MA MA > LA > OA The pH of an aqueous sodium fluoride (NaF) solution is______because______7; sodium fluoride is a simple salt. above 7; fluoride is a weak base. below 7; fluoride reacts with water to make hydrofluoric acid. about 7; fluoride is a weak base, but produces hydrofluoric acid, and these two neutralize one another. 0; sodium fluoride is a salt not an acid or a base.

Explanation / Answer

1) The Acid with Smaller Pka Is a stronger Acid So

    The correct option   is = OA > MA > LA

2)   Its a basic solution... So pH is larger than 7 because...F- is a weak acid C option

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