Question 10 Solid CO2 (0.33 mol) is reacted with CH3MBB (0.23 mol) in ether solvent. The product of the reaction is isolated in aqueous solution (assume 100% yield) and excess CO2 is removed. Subsequently, HCI (aq) (0.10 mol) is added. What is the pH of the solution that results? Notes: You will need to look up a pK, for this question and report your answer to 2 decimal places. A linear dialkene has 7 carbon atoms. If excess HI (> 2.0 mol equivalents) is added a mixture of the alkene, what is the MW of the final product? Answer in g mol to one decimal place.

Question 10 Solid CO2 (0.33 mol) is reacted with CH3MBB (0.23 mol) in ether solvent. The product of the reaction is isolated in aqueous solution (assume 100% yield) and excess CO2 is removed. Subsequently, HCI (aq) (0.10 mol) is added. What is the pH of the solution that results? Notes: You will need to look up a pK, for this question and report your answer to 2 decimal places. A linear dialkene has 7 carbon atoms. If excess HI (> 2.0 mol equivalents) is added a mixture of the alkene, what is the MW of the final product? Answer in g mol to one decimal place.

Chemistry

9th Edition

ISBN:9781133611097

Author:Steven S. Zumdahl

Publisher:Steven S. Zumdahl

Chapter15: Acid-base Equilibria

Section: Chapter Questions

Problem 7ALQ: You have a solution of the weak acid HA and add some HCl to it. What are the major species in the...

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You have a solution of the weak acid HA and add some HCl to it. What are the major species in the solution? What do you need to know to calculate the pH of the solution, and how would you use this information? How does the pH of the solution of just the HA compare with that of the final mixture? Explain.
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Sketch the titration curve for a weak acid titrated by a strong base. When performing calculations concerning weak acidstrong base titrations, the general two-slep procedure is to solve a stoichiometry problem first, then to solve an equilibrium problem to determine the pH. What reaction takes place in the stoichiometry part of the problem? What is assumed about this reaction? At the various points in your titration curve, list the major species present after the strong base (NaOH, for example) reacts to completion with the weak acid, HA. What equilibrium problem would you solve at the various points in your titration curve to calculate the pH? Why is pH 7.0 at the equivalence point of a weak acid-strong base titration? Does the pH at the halfway point to equivalence have to be less than 7.0? What does the pH at the halfway point equal? Compare and contrast the titration curves for a strong acidstrong base titration and a weak acidstrong base titration.
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