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(A) Which of the following combinations will give a buffered solution that has a pH of about 5? Explain clearly the reason fo
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This question is solved by using the simple concept of buffer solution, using Kb value and its relation with Ka value.

The answer is given in the image,

Answers J OJC5H5 M miakd with CSMS NHA đaute chú ka - Ke = -2x10° 1 Kb 2.78109 KQ = 5.9x10-6 pka = -loy ko = -log(5.9x106) pk

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