Tooth Enamel Is Composed of the Mineral Hydroxyapatite 10-59, but It Reacts with Weak Acids in the Mouth
Tooth enamel is composed of the mineral hydroxyapatite. It is essentially insoluble in water with Ksp = 2.3 10-59, but it reacts with weak acids in the mouth as described by one of the reaction equations below. You can determine the equilibrium constant, K, for this reaction from Ksp and Kw (the equilibrium constant for water autoionization, Kw = 1.0 10-14) . What is the value of K?
A) 2.3 10 -73
B) 4.3 10 45
C) 2.3 10 -45
D) 1.1 10 -14
E) 9.9 10 -15
Correct Answer:
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