7.6.1 - Key Characteristics of Polyprotic Acid Dissociation
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Practice Questions
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Define a polyprotic acid.
💡 Hint: What does 'poly' in polyprotic imply?
What does Ka measure?
💡 Hint: Think about what kind of equilibrium it represents.
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Interactive Quizzes
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What is the first dissociation reaction of sulfuric acid?
💡 Hint: Recall the structure of sulfuric acid to help identify the products.
True or False: The dissociation constant Ka2 is always greater than Ka1 for polyprotic acids.
💡 Hint: Think about what happens when you have a negatively charged ion.
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Challenge Problems
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Given a diprotic acid with Ka1 = 1.0 x 10^-4 and Ka2 = 3.0 x 10^-8, calculate the pH of a 0.05 M solution.
💡 Hint: Don't forget to apply the proper concentrations related to the first dissociation only.
Given the titration of H₂CO₃ with NaOH, describe the expectations regarding the titration curve’s shape and the nature of equivalence points.
💡 Hint: Recall what happens in each stage of a diprotic acid’s neutralization.
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