Common-Ion Effect
AP Chemistry · Flashcards
AP CHEMISTRY · FLASHCARDS
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QUESTION
For
A
g
C
l
(
s
)
AgCl(s)
A
g
C
l
(
s
)
, what happens to solubility when
N
a
C
l
(
a
q
)
NaCl(aq)
N
a
C
l
(
a
q
)
is added?
QUESTION
Which ion is the common ion when
CH
3
COOH
(
a
q
)
\text{CH}_3\text{COOH}(aq)
CH
3
COOH
(
a
q
)
is mixed with
CH
3
COONa
(
a
q
)
\text{CH}_3\text{COONa}(aq)
CH
3
COONa
(
a
q
)
?
QUESTION
For
C
a
F
2
(
s
)
CaF_2(s)
C
a
F
2
(
s
)
, what happens to solubility when
N
a
F
(
a
q
)
NaF(aq)
N
a
F
(
a
q
)
is added?
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ANSWER
Solubility decreases (common ion
F
−
F^-
F
−
). Added fluoride shifts dissolution equilibrium left.
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