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(answer choices are graphs) A (matches the graph given in the question) 8.1 #3: H2O (l)+H2O (l)⇄H3O+ (aq)+OH− (aq) At 5.0°C, the value of Kw for the equilibrium shown above is 1.9×10−15 and the value of pKw is 14.73.Flashcards AP Chemistry Unit 9 Progress check:MCQ | Quizlet. Based on the information given, which of the following is a major difference between the zinc-mercury cell and the lithium-iodine cell? Click the card to flip. B. Quizlet has study tools to help you learn anything. 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