Trihydroxybenzoic acid (THB) is a not-so-weak acid with an ionization constant: Ka = 2.1 × 10-2. Calculate the [H+] and the pH of a 0.050 molar solution of THB.Hint: Simplified assumptions do not work in this case.
A) 1.9 × 10-2, 1.72
B) 2.4 × 10-2, 1.63
C) 2.5 × 10-2, 1.59
D) 3.2 × 10-2, 1.49
E) 1.1 × 10-3, 2.98
Correct Answer:
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