Many acids are partially dissociated into ions in aqueous solution. Trichloroacetic acid (CCl 3 CO 2 H ) , for instance, is partially dissociated in water according to the equation CCl 3 CO 2 H ( a q ) ⇌ H + ( a q ) + CCl 3 CO 2 − ( a q ) What is the percentage of molecules dissociated if the freezing point of a 1.00 m solution of trichloroacetic acid in water is − 2.53 o C ?
Many acids are partially dissociated into ions in aqueous solution. Trichloroacetic acid (CCl 3 CO 2 H ) , for instance, is partially dissociated in water according to the equation CCl 3 CO 2 H ( a q ) ⇌ H + ( a q ) + CCl 3 CO 2 − ( a q ) What is the percentage of molecules dissociated if the freezing point of a 1.00 m solution of trichloroacetic acid in water is − 2.53 o C ?
Solution Summary: The author explains that the depression in freezing point of a 1.00 m solution in water is -2.53°C.
Many acids are partially dissociated into ions in aqueous solution. Trichloroacetic acid
(CCl
3
CO
2
H
)
,
for instance, is partially dissociated in water according to the equation
CCl
3
CO
2
H
(
a
q
)
⇌
H
+
(
a
q
)
+
CCl
3
CO
2
−
(
a
q
)
What is the percentage of molecules dissociated if the freezing point of a 1.00 m solution of trichloroacetic acid in water is
−
2.53
o
C
?
>
Can the molecule on the right-hand side of this organic reaction be made in good yield from no more than two reactants, in one step, by moderately heating
the reactants?
esc
?
A
O
O
•If your answer is yes, then draw the reactant or reactants in the drawing area below. You can draw the reactants in any arrangement you like.
• If your answer is no, check the box under the drawing area instead.
olo
18
Ar
Explanation
Check
BB
Click and drag to start drawing a structure.
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Name the structure
>
For each pair of substrates below, choose the one that will react faster in a substitution reaction, assuming that:
1. the rate of substitution doesn't depend on nucleophile concentration and
2. the products are a roughly 50/50 mixture of enantiomers.
Substrate A
Substrate B
Faster Rate
X
CI
(Choose one)
(Choose one)
CI
Br
Explanation
Check
Br
(Choose one)
C
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A
F10
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