What is citric acid? How does it ionize?
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Answer:
Citric acid (C6H8O7) is a weak organic acid and naturally found in citrus fruits. It is a biochemical intermediate in the citric acid cycle.
Explanation:
C3H5O(CO2H)3 + H2O ⇄ H3O+ + C4H5O3(CO2H)2- Ka1 = 7.4 x 10-3
C4H5O3(CO2H)2- + H2O ⇄ H3O+ + C5H5O5(CO2H)2- Ka2 = 1.7 x 10-5
C5H5O5(CO2H)2- + H2O ⇄ H3O+ + C6H5O73- Ka3 = 7.4 x 10-7
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