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Design a buffer that has a pH of 5.70 using one of the weak base/conjugate acid...

Design a buffer that has a pH of 5.70 using one of the weak base/conjugate acid systems shown below.

Weak Base Kb Conjugate Acid Ka pKa

CH3NH2 4.2×10-4 CH3NH3+ 2.4×10-11 10.62

C6H15O3N 5.9×10-7 C6H15O3NH+ 1 .7×10-8 7.77

C5H5N 1.5×10-9 C5H5NH+ 6.7×10-6 5.17

How many grams of the chloride salt of the conjugate acid must be combined with how many grams of the weak base, to produce 1.00 L of a buffer that is 1.00 M in the weak base?

grams chloride salt of conjugate acid = ______

grams weak base = ______

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