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Standard IX
Chemistry
Ways of Representing the Concentration of a Solution
0.2 g of fine...
Question
0.2
g
of fine animal charcoal is mixed with half litre of acetic acid
(
2
M
)
solution and shaken for
30
minutes?
A
Concentration remains same
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B
Concentration increases
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C
Concentration of the solution decreases
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D
None of above
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Solution
The correct option is
A
Concentration of the solution decreases
Concentration of acetic acid decreases as it gets adsorbed on charcoal.
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Similar questions
Q.
One litre of
2
M
acetic acid is mixed with one litre of
2
M
ethyl alcohol to form ester as follows:
C
H
3
C
O
O
H
+
C
2
H
5
O
H
→
C
H
3
C
O
O
C
2
H
5
+
H
2
O
.
Decrease in initial reaction rate if each solution is diluted by an equal volume of water would be:
Q.
One litre of 2M acetic acid is mixed with one litre of 3M ethyl alcohol to form ester
C
H
3
C
O
O
H
+
C
2
H
5
O
H
⇔
C
H
3
C
O
O
C
2
H
5
+
H
2
O
. The decrease in the initial rate if each solution is diluted by an equal volume of water would be
Q.
One litre of
2
M
acetic acid and one litre of
3
M
ethyl alcohol were mixed. The esterification takes place according to the reaction:
C
H
3
C
O
O
H
+
C
2
H
5
O
H
→
C
H
3
C
O
O
C
2
H
5
+
H
2
O
If each solution is diluted by one litre water, the rate would become:
Q.
500
m
L
of
0.2
M
aqueous solution of acetic acid is mixed with
500
m
L
of
0.2
M
H
C
l
at
25
o
C
(a) Calculate the degree of dissociation of acetic acid in the resulting solution and pH of the solution.
(b) If
6
g
of
N
a
O
H
is added to the above solution, determine final pH. Assume there is no change in volume on mixing.
K
a
for acetic acid is
1.75
×
10
−
5
M
L
−
1
.
Q.
One litre of 2M acetic acid is mixed with one litre of 3M ethyl alcohol to form ester
C
H
3
C
O
O
H
+
C
2
H
5
O
H
⇔
C
H
3
C
O
O
C
2
H
5
+
H
2
O
. The decrease in the initial rate if each solution is diluted by an equal volume of water would be
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