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How Many Grams of Pyridine Are There in 100 ML

Question 20

Multiple Choice

How many grams of pyridine are there in 100 mL of an aqueous solution that has a pH of 9.00? The Kb for pyridine is 1.9 × 10-9 and the equation of interest is C5H5N(aq) + H2O(l) ⇌ C5H5NH+(aq) + OH-(aq) .


A) 0.053 g
B) 0.42 g
C) 0.79 g
D) 7.9 g

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