SubmitQuestion 8 of 20X CengWhat ratio of CH;NH, toCH,NH,* is needed to prepare apH 9.70 buffer? (Kb forCH;NH, is 4.4 x 10-4)1345C7+/-x 100Tap here or pull up for additional resourcesCOLO C0

Buffer solution: The solution that resists the change in pH is known as a buffer solution. The…

Answered: What ratio of CH;NH2 to CH;NH3* is…

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What ratio of CH;NH2 to CH;NH3* is needed to prepare a pH 9.70 buffer? (Kb for CH;NH, is 4.4 × 10-4)

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter15: Acid-base Equilibria

Section: Chapter Questions

Problem 81E: Which of the indicators in Fig. 14-8 could be used for the titrations in Exercises 61 and 63?

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Which of the indicators in Fig. 14-8 could be used for the titrations in Exercises 61 and 63?
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8-60 How is the buffer capacity affected by the ratio of the conjugate base to the conjugate acid?
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A buffer is prepared in which the ratio [ H2PO4 ]/[ HPO42 ]is 3.0. (a) What is the pH of this buffer? (b) Enough strong acid is added to convert 15% of HPO42- to H2PO4-. What is the pH of the resulting solution? (c) Enough strong base is added to make the pH 7.00. What is the ratio of [H2PO4-] to [HPO42-] at this point?
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8-55 We commonly refer to a buffer as consisting of approximately equal molar amounts of a weak acid and its conjugate base—for example, CH3COOH and CH3COO-. Is it also possible to have a buffer consisting of approximately equal molar amounts of a weak base and its conjugate acid? Explain.
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