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Published byVeronika Cahyadi Modified over 6 years ago
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Quiz 1. A solution of H3PO4 and its associated forms has a pH of What is the principal species? For H3PO4, pKa1 = 2.148, pKa2 = 7.199, pKa3 = Show how you came to your answer using equilibrium reactions. a. H3PO4 b. H2PO4- c. HPO d. PO43- 2. In problem 1 above, what is the second most abundant species?
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Quiz 3. How many mL of M HCl need to be added to 20.0 mL of M acetate to reach the equivalence point? Show your work. a mL b mL c mL d. none of the above 4. Consider the titration of a weak acid whose pKa is What is the pH of the titration half way to the equivalence point? a b. 6.3 c d. more information is necessary
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