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Chemistry, 23.05.2020 02:57, mauralawson
If a buffer system containing hydrofluoric acid and fluoride (pKa = 3.17) initially has a pH of 3.22 and base is added until a new pH of 4.69 is obtained, how has the ratio of fluoride to hydrofluoric acid changed?
A.
from 1.12 : 1 to 33.1 : 1
B.
from 1 : 1.12 to 33.1 : 1
C.
from 1 : 1.12 to 1 : 33.1
D.
from 1.12 : 1 to 1 : 33.1
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Answers: 1
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If a buffer system containing hydrofluoric acid and fluoride (pKa = 3.17) initially has a pH of 3.22...
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