On Easter Sunday, April 3, 1983, nitric acid spilled from a tank car near downtown Denver, Colorado. The spill was neutralized with sodium carbonate: 2 HNO 3 ( a q ) + Na 2 CO 3 ( a q ) → 2 NaNO 3 ( a q ) + H 2 O ( l ) + CO 2 ( g ) a. Calculate ∆ H° for this reaction. Approximately 2.0 ×10 4 gal nitric acid was spilled. Assume that the acid was an aqueous solution containing 70.0% HNO 3 by mass with a density of 1.42 glcm3. What mass of sodium carbonate was required for complete neutralization of the spill, and what quantity of heat was evolved? ( Δ H f ° for NaNO 3 (aq) = −467 kJ/mol) b. According to The Denver Post for April 4, 1983, authorities feared that dangerous air pollution might occur during the neutralization. Considering the magnitude of ∆ H°, what was their major concern?
On Easter Sunday, April 3, 1983, nitric acid spilled from a tank car near downtown Denver, Colorado. The spill was neutralized with sodium carbonate: 2 HNO 3 ( a q ) + Na 2 CO 3 ( a q ) → 2 NaNO 3 ( a q ) + H 2 O ( l ) + CO 2 ( g ) a. Calculate ∆ H° for this reaction. Approximately 2.0 ×10 4 gal nitric acid was spilled. Assume that the acid was an aqueous solution containing 70.0% HNO 3 by mass with a density of 1.42 glcm3. What mass of sodium carbonate was required for complete neutralization of the spill, and what quantity of heat was evolved? ( Δ H f ° for NaNO 3 (aq) = −467 kJ/mol) b. According to The Denver Post for April 4, 1983, authorities feared that dangerous air pollution might occur during the neutralization. Considering the magnitude of ∆ H°, what was their major concern?
Solution Summary: The author explains Hess's Law: Standard enthalpy of formation, which associates with the formation of one mole of a product from its pure elements.
On Easter Sunday, April 3, 1983, nitric acid spilled from a tank car near downtown Denver, Colorado. The spill was neutralized with sodium carbonate:
2
HNO
3
(
a
q
)
+
Na
2
CO
3
(
a
q
)
→
2
NaNO
3
(
a
q
)
+
H
2
O
(
l
)
+
CO
2
(
g
)
a. Calculate ∆H° for this reaction. Approximately 2.0 ×104 gal nitric acid was spilled. Assume that the acid was an aqueous solution containing 70.0% HNO3 by mass with a density of 1.42 glcm3. What mass of sodium carbonate was required for complete neutralization of the spill, and what quantity of heat was evolved? (
Δ
H
f
°
for NaNO3(aq) = −467 kJ/mol)
b. According to The Denver Post for April 4, 1983, authorities feared that dangerous air pollution might occur during the neutralization. Considering the magnitude of ∆H°, what was their major concern?
b)
8.
Indicate whether the following carbocation rearrangements are likely to occur
Please explain your rational using 10 words or less
not likely to occur
• The double bond is still in the
Same position
+
Likely
to oc
occur
WHY?
-3
H3C
Brave
Chair Conformers. Draw the chair conformer of the following substituted
cyclohexane. Peform a RING FLIP and indicate the most stable
conformation and briefly explain why using 20 words or less.
CI
2
-cobs ??
MUST INDICATE H -2
-2
Br
EQ
Cl
OR
AT
Br
H&
most stable
WHY?
- 4
CH
12
Conformational Analysis. Draw all 6 conformers (one above each letter) of the
compound below looking down the indicated bond. Write the letter of the
conformer with the HIGHEST and LOWEST in energies on the lines provided.
NOTE: Conformer A MUST be the specific conformer of the structure as drawn below
-4 NOT
HOH
OH
3
Conformer A:
Br
OH
A
Samo
Br H
04
Br
H
H3
CH₂
H
anti
stagere
Br CH
clipsed
H
Brott
H
IV
H
MISSING 2
-2
B
C
D
E
F
X
6
Conformer with HIGHEST ENERGY:
13. (1
structure
LOWEST ENERGY:
Nomenclature. a) Give the systematic (IUPAC) name structure. b) Draw the
corresponding to this name. HINT: Do not forget to indicate stereochemistry
when applicable.
a)
८८
2
"Br
{t༐B,gt)-bemn€-nehpརི་ཚ༐lnoa
Parent name (noname)
4 Bromo
Sub = 2-methylethyl-4 Bromo nonane
b) (3R,4S)-3-chloro-4-ethyl-2,7-dimethyloctane
# -2
-2
in the scope of the SCH4U course! please show all steps as im still learning how to format my answers in the format given, thank you!
Chapter 7 Solutions
Bundle: Chemistry: An Atoms First Approach, 2nd, Loose-Leaf + OWLv2, 4 terms (24 months) Printed Access Card
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, chemistry and related others by exploring similar questions and additional content below.
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
Calorimetry Concept, Examples and Thermochemistry | How to Pass Chemistry; Author: Melissa Maribel;https://www.youtube.com/watch?v=nSh29lUGj00;License: Standard YouTube License, CC-BY