In the presence of NH 3 , Cu 2+ forms the complex ion Cu(NH 3 ) 4 2+ . If the equilibrium concentrations of Cu 2+ and Cu(NH 3 ) 4 2+ are 1.8 × 10 −17 M and 1.0 × 10 −3 M , respectively, in a 1.5- M NH 3 solution, calculate the value for the overall formation constant of Cu(NH 3 ) 4 2+ . Cu 2+ ( a q ) + 4 N H 3 ( a q ) ⇌ C u ( N H 3 ) 4 2 + ( a q ) K overall = ?
In the presence of NH 3 , Cu 2+ forms the complex ion Cu(NH 3 ) 4 2+ . If the equilibrium concentrations of Cu 2+ and Cu(NH 3 ) 4 2+ are 1.8 × 10 −17 M and 1.0 × 10 −3 M , respectively, in a 1.5- M NH 3 solution, calculate the value for the overall formation constant of Cu(NH 3 ) 4 2+ . Cu 2+ ( a q ) + 4 N H 3 ( a q ) ⇌ C u ( N H 3 ) 4 2 + ( a q ) K overall = ?
In the presence of NH3, Cu2+ forms the complex ion Cu(NH3)42+. If the equilibrium concentrations of Cu2+ and Cu(NH3)42+ are 1.8 × 10−17M and 1.0 × 10−3M, respectively, in a 1.5-M NH3 solution, calculate the value for the overall formation constant of Cu(NH3)42+.
Cu
2+
(
a
q
)
+
4
N
H
3
(
a
q
)
⇌
C
u
(
N
H
3
)
4
2
+
(
a
q
)
K
overall
=
?
From the given compound, choose the proton that best fits each given description.
a
CH2
CH 2
Cl
b
с
CH2
F
Most shielded:
(Choose one)
Least shielded:
(Choose one)
Highest chemical shift:
(Choose one)
Lowest chemical shift:
(Choose one)
×
Consider this molecule:
How many H atoms are in this molecule?
How many different signals could be found in its 1H NMR spectrum?
Note: A multiplet is considered one signal.
For each of the given mass spectrum data, identify whether the compound contains chlorine, bromine, or neither.
Compound
m/z of M* peak
m/z of M
+ 2 peak
ratio of M+ : M
+ 2 peak
Which element is present?
A
122
no M
+ 2 peak
not applicable
(Choose one)
B
78
80
3:1
(Choose one)
C
227
229
1:1
(Choose one)
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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