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
?
What is the pOH for a solution at 25 °C that has a H3O+ concentration of 6.57 ×10-6 M?
A 34.1 % (NH4 )2SO4 (molar mass = 132.1 g mol−1) has a density of 1.15 g mL−1. What is the molarity of this solution?
(the answer should be entered with 3 significant figures; do not enter units; give answer in normal notation--examples include 1.23 and 120. and -123 and 123. and 12.3)
Determine the boiling point of a solution that contains 78.5 g of compound W (molar mass = 132.5 g mol–1) dissolved in 1088.6 g benzene (C6H6; molar mass = 84.156 g mol–1; Kb = 2.53 °C m–1; boiling point of pure benzene = 80.1 °C).
(the answer should be entered with 3 significant figures; do not enter units; give answer in normal notation--examples include 1.23 and 120. and -123 and 123. and 12.3)
NEED HELP ASAP NO WORK NEEDED
At a particular temperature, aluminum hydroxide , Al(OH)3, has a Ksp = 2.52×10-31. What is the hydroxide ion concentration in a saturated aluminum hydroxide solution?
11.
The structural formulae of two amino acids are shown below.
||
НООС - СH-CH, - CH-С -ОН
NH2
Glutamic acid (glu)
When glutamic acid dissolve in aqueous sodium hydroxide, monosodium glutamate
(MSG) is formed, which is used as a flavor enhancer. Write an equation for the formation
of MSG. Predict whether a solution of glutamic acid is acidic, basic or neutral. Explain
your answer.
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Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Author:Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell