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Sophie [7]
3 years ago
14

(30 Points)

Chemistry
1 answer:
irina [24]3 years ago
8 0
<span>By definition:

pH = pKa + log [acetate]/ [acetic acid]

so

5.02 = 4.74 + log [acetate] / 10 mmole

10mmole = 10/1000 = 0.01 mole

5.02 = 4.74 + log [acetate] / 0.01

5.02 - 4.74 = 0.28 = log [acetate] /0.01


10^0.28 = </span>1.90546 = [acetate] / 0.01 <span>
[acetate] = 0.019 mole 

= 19 millimoles</span>
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