Consider the following half-reactions and E o values: SW A g + ( a q ) + e − → A g ( s ) E o = 0.80 V C u 2 + ( a q ) + 2 e − → C u ( s ) E o = 0.30 V P b 2 + ( a q ) + 2 e − → P b ( s ) E o = − 0.13 V (a) Which of these metals or ions is the strongest oxidizing agent? Which is the strongest reducing agent? (b) The half-reactions can be used to construct three different galvanic cells. Tell which cell delivers the highest voltage, identify the anode and cathode, and tell the direction of electron and ion flow. (c) Write the cell reaction for part (b), and calculate the values of E°, Δ G o (in kilojoules), and K for this reaction at 25 °C. (d) Calculate the voltage for the cell in part (b) if both ion concent
Consider the following half-reactions and E o values: SW A g + ( a q ) + e − → A g ( s ) E o = 0.80 V C u 2 + ( a q ) + 2 e − → C u ( s ) E o = 0.30 V P b 2 + ( a q ) + 2 e − → P b ( s ) E o = − 0.13 V (a) Which of these metals or ions is the strongest oxidizing agent? Which is the strongest reducing agent? (b) The half-reactions can be used to construct three different galvanic cells. Tell which cell delivers the highest voltage, identify the anode and cathode, and tell the direction of electron and ion flow. (c) Write the cell reaction for part (b), and calculate the values of E°, Δ G o (in kilojoules), and K for this reaction at 25 °C. (d) Calculate the voltage for the cell in part (b) if both ion concent
Consider the following half-reactions and Eo values: SW
A
g
+
(
a
q
)
+
e
−
→
A
g
(
s
)
E
o
=
0.80
V
C
u
2
+
(
a
q
)
+
2
e
−
→
C
u
(
s
)
E
o
=
0.30
V
P
b
2
+
(
a
q
)
+
2
e
−
→
P
b
(
s
)
E
o
=
−
0.13
V
(a) Which of these metals or ions is the strongest oxidizing agent? Which is the strongest reducing agent? (b) The half-reactions can be used to construct three different galvanic cells. Tell which cell delivers the highest voltage, identify the anode and cathode, and tell the direction of electron and ion flow. (c) Write the cell reaction for part (b), and calculate the values of E°,
Δ
G
o
(in kilojoules), and K for this reaction at 25 °C. (d) Calculate the voltage for the cell in part (b) if both ion concent
The fire releases 2.80 x 107 Joules of heat energy for each liter of oil burned. The water starts out at 24.5 °C, raising the water's temperature up to 100 °C, and then raises the temperature of the resulting steam up to 325 °C. How many liters of water will be needed to absorb the heat from the fire in this way, for each 1.0 liter of crude oil burned?
4186 J/(kg°C) = heat of water
2020 J/(kg°C) = heat of steam
2,256,000 (i.e. 2.256 x 106) J/kg = latent heat of vaporization for water (at the boiling point of 100 °C).
6
Which of the following are likely to be significant resonance structures of a resonance hybrid? Draw another resonance
structure for each of the compounds you select as being a resonance form. (A
Br:
Br:
A
B
C
D
E
Write the systematic (IUPAC) name for the following organic molecules.
Note for advanced students: you do not need to include any E or Z prefixes in your names.
Br
structure
Br
Br
Oweu
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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