a. Using the K sp value for Cu(OH) 2 (1.6 × 10 −19 ) and the overall formation constant for Cu(NH 3 ) 4 2+ (1.0 × 10 13 ), calculate the value for the equilibrium constant for the following reaction: Cu(OH) 2 ( s ) + 4NH 3 ( a q ) ⇌ C u ( N H 3 ) 4 2 + ( a q ) + 2 O H − ( a q ) b. Use the value of the equilibrium constant you calculated in part a to calculate the solubility (in mol/L) of Cu(OH) 2 in 5.0 M NH 3 . In 5.0 M NH 3 the concentration of OH − is 0.0095 M .
a. Using the K sp value for Cu(OH) 2 (1.6 × 10 −19 ) and the overall formation constant for Cu(NH 3 ) 4 2+ (1.0 × 10 13 ), calculate the value for the equilibrium constant for the following reaction: Cu(OH) 2 ( s ) + 4NH 3 ( a q ) ⇌ C u ( N H 3 ) 4 2 + ( a q ) + 2 O H − ( a q ) b. Use the value of the equilibrium constant you calculated in part a to calculate the solubility (in mol/L) of Cu(OH) 2 in 5.0 M NH 3 . In 5.0 M NH 3 the concentration of OH − is 0.0095 M .
Solution Summary: The author explains that the equilibrium constant for a given reaction is calculated by the formula, K_spcdot
a. Using the Ksp value for Cu(OH)2 (1.6 × 10−19) and the overall formation constant for Cu(NH3)42+ (1.0 × 1013), calculate the value for the equilibrium constant for the following reaction:
Cu(OH)
2
(
s
)
+
4NH
3
(
a
q
)
⇌
C
u
(
N
H
3
)
4
2
+
(
a
q
)
+
2
O
H
−
(
a
q
)
b. Use the value of the equilibrium constant you calculated in part a to calculate the solubility (in mol/L) of Cu(OH)2 in 5.0 M NH3. In 5.0 M NH3 the concentration of OH− is 0.0095 M.
1) a) Give the dominant Intermolecular Force (IMF) in a sample of each of the following
compounds. Please show your work. (8) SF2, CH,OH, C₂H₂
b) Based on your answers given above, list the compounds in order of their Boiling Point
from low to high. (8)
19.78 Write the products of the following sequences of reactions. Refer to your reaction road-
maps to see how the combined reactions allow you to "navigate" between the different
functional groups. Note that you will need your old Chapters 6-11 and Chapters 15-18
roadmaps along with your new Chapter 19 roadmap for these.
(a)
1. BHS
2. H₂O₂
3. H₂CrO4
4. SOCI₂
(b)
1. Cl₂/hv
2. KOLBU
3. H₂O, catalytic H₂SO4
4. H₂CrO4
Reaction
Roadmap
An alkene 5. EtOH
6.0.5 Equiv. NaOEt/EtOH
7. Mild H₂O
An alkane
1.0
2. (CH3)₂S
3. H₂CrO
(d)
(c)
4. Excess EtOH, catalytic H₂SO
OH
4. Mild H₂O*
5.0.5 Equiv. NaOEt/EtOH
An alkene 6. Mild H₂O*
A carboxylic
acid
7. Mild H₂O*
1. SOC₁₂
2. EtOH
3.0.5 Equiv. NaOEt/E:OH
5.1.0 Equiv. NaOEt
6.
NH₂
(e)
1. 0.5 Equiv. NaOEt/EtOH
2. Mild H₂O*
Br
(f)
i
H
An aldehyde
1. Catalytic NaOE/EtOH
2. H₂O*, heat
3. (CH,CH₂)₂Culi
4. Mild H₂O*
5.1.0 Equiv. LDA
Br
An ester
4. NaOH, H₂O
5. Mild H₂O*
6. Heat
7.
MgBr
8. Mild H₂O*
7. Mild H₂O+
Li+ is a hard acid. With this in mind, which if the following compounds should be most soluble in water?
Group of answer choices
LiBr
LiI
LiF
LiCl
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