(a) Interpretation: The symbol Δ v a p H needs to be described. Concept introduction: Enthalpy of vaporization, Δ v a p H is the amount of energy required to convert certain quantity of liquid into gas.
(a) Interpretation: The symbol Δ v a p H needs to be described. Concept introduction: Enthalpy of vaporization, Δ v a p H is the amount of energy required to convert certain quantity of liquid into gas.
Solution Summary: The author explains the meaning of the symbol v a p H and the term instantaneous dipole.
Enthalpy of vaporization, ΔvapH is the amount of energy required to convert certain quantity of liquid into gas.
Interpretation Introduction
(b)
Interpretation:
The symbol Tc needs to be described.
Concept introduction:
Critical temperature is temperature at which the liquid and vapor interface become indistinguishable.
Interpretation Introduction
(c)
Interpretation:
The term instantaneous dipole needs to be defined.
Concept introduction:
Instantaneous dipoles are responsible for the forces known as dispersion forces/London force. This is the weakest intermolecular force among the other forces.
Interpretation Introduction
(d)
Interpretation:
The term coordination number needs to be defined.
Concept introduction:
Each atom inthe crystal is in contact with several other atoms in their structural units.
Interpretation Introduction
(e)
Interpretation:
The term unit cell needs to be defined.
Concept introduction:
Crystal structures are described according to the arrangements of particles in the unit cell.
2H2S(g)+3O2(g)→2SO2(g)+2H2O(g)
A 1.2mol sample of H2S(g) is combined with excess O2(g), and the reaction goes to completion.
Question
Which of the following predicts the theoretical yield of SO2(g) from the reaction?
Responses
1.2 g
Answer A: 1.2 grams
A
41 g
Answer B: 41 grams
B
77 g
Answer C: 77 grams
C
154 g
Answer D: 154 grams
D
Part VII. Below are the 'HNMR, 13 C-NMR, COSY 2D- NMR, and HSQC 2D-NMR (similar with HETCOR but axes are reversed) spectra of an
organic compound with molecular formula C6H1003 - Assign chemical shift values to the H and c atoms of the
compound. Find the structure. Show complete solutions.
Predicted 1H NMR Spectrum
4.7 4.6 4.5 4.4 4.3 4.2 4.1 4.0 3.9 3.8 3.7 3.6 3.5 3.4 3.3 3.2 3.1 3.0 2.9 2.8 2.7 2.6 2.5 2.4 2.3 2.2 2.1 2.0 1.9 1.8 1.7 1.6 1.5 1.4 1.3 1.2 1.1
f1 (ppm)
Predicted 13C NMR Spectrum
100
f1 (ppm)
30
220 210 200 190 180
170
160 150 140 130 120
110
90
80
70
-26
60
50
40
46
30
20
115
10
1.0 0.9 0.8
0
-10
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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