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1. (9 pts) Consider a buffer solution composed of C6H5NH3+ and C6H5NH2. (Kb for the amine...

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Chemistry

1. (9 pts) Consider a buffer solution composed of C6H5NH3+ andC6H5NH2. (Kb for the amine base is 3.9 x 10-10)

a. What is the optimum buffer range for this mixture?

b. What ratio of C6H5NH2 to C6H5NH3+ would be needed to buffer asolution at pH 4.10?

c. What is the pH of a solution containing 0.35 M C6H5NH3+ and0.45 M C6H5NH2?

d. What is the pH after addition of 0.0015 mol of HBr to 20 mLof the solution in part c?

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