Acetic
acid is a weak acid why give reason
Answers
Acetic acid, CH3COOH , is a weak acid, because it is present in solution primarily as whole CH3COOH molecules, and very little as H+ and CH3COO− ions. Which furthermore indicates that acetic acid is weak, because strong ions ionize almost completely.
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Answer:
It is a weak acid.
Explanation:
Acetic acid,
CH
3
COOH
, is a weak acid, because it is present in solution primarily as whole
CH
3
COOH
molecules, and very little as
H
+
and
CH
3
COO
−
ions.
CH
3
COOH
(
a
q
)
⇌
H
+
(
a
q
)
+
CH
3
COO
−
(
a
q
)
The acid dissociation constant (
K
a
) of acetic acid is
1.76
×
10
−
5
. This basically means that the ratio of
CH
3
COOH
concentration to the concentration of
H
+
and
CH
3
COO
−
ions is
1
:
1.76
×
10
−
5
:
[
H
+
]
[
CH
3
COO
−
]
[
CH
3
COOH
]
=
1.76
×
10
−
5
Which furthermore indicates that acetic acid is weak, because strong ions ionize almost completely.
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