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The next three (3) problems deal with the titration of 105 mL of 1.35 M ethylamine,...

The next three (3) problems deal with the titration of 105 mL of 1.35 M ethylamine, CH3CH2NH2 (Kb = 5.6 x 10-4) with 0.25 M HCl. Water will be a major species throughout the titration. The chemical species, in addition to water, that can be found in this reaction mixture during the titration are: I. H+ II. OH- III. Cl- IV. CH3CH2NH2 V. CH3CH2NH3+

1. What is the pH of the solution at the equivalence point?

2. How many mL of HCl will need to be added to the ethylamine, CH3CH2NH2 solution to reach a pH of 10.75?

3. What will the major species in solution be when 289.17 mL of HCl has been added to the base solution?

a. CH3CH2NH2, CH3CH2NH3+, Cl-, OH- b. CH3CH2NH3+, Cl-, H+ c. CH3CH2NH2, CH3CH2NH3+, Cl- d. CH3CH2NH2, CH3CH2NH3+, Cl-, H+ e. CH3CH2NH3+, Cl-

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queen_honey_blossom answered 2 years ago
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