CHEM102 Lecture Notes - Lecture 20: Buffer Solution, Conjugate Acid, Weak Base
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"Acid-base buffers are most effective when the target pH of the buffer solution is close (within one unit) to the pKa of the conjugate acid in in the conjugate acid/base pair to be used in the buffer. This is called the buffer range for a particular acid/base system. For the three questions below, select the two compounds from the list which could be most effectively combined to create a buffer at the target pH. You will not need to use all of the compounds - and should need to use each compound only once.: 1. pH 4 buffer 2. pH 7 buffer 3. pH 9 buffer sodium acetate, Na(CH3COO) | |
pyridinium chloride, (C5H5NH)Câ | |
ammonium chloride, (NH4)Câ | |
ammonia, NH3 | |
pyridine, C5H5N | |
formic acid, HCOOH | |
sodium formate, Na(HCOO) | |
hypochlorous acid, HCâO | |
sodium hypochlorite, NaCâO -Please provide explanation with answer if possible :) |