Principles of General Chemistry
3rd Edition
ISBN: 9780073402697
Author: SILBERBERG, Martin S.
Publisher: McGraw-Hill College
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Textbook Question
Chapter 6, Problem 6.20P
What data do you need to determine the specific heat capacity of a substance?
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Part VII. The H-NMR of a compound with molecular formula C5 H 10 O2 is given below.
Find the following:
(a) The no. of protons corresponding to each signal in the spectra
(6) Give the structure of the compound and assign the signals to each
proton in the compound.
a
70.2
Integration Values
C5H10O2
b
47.7
C
46.5
d
69.5
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
Chemical Shift (ppm)
1.9
1.8
1.7 1.6
1.5
1.4 1.3 1.2
1.1 1.0
0.9 0.8
Part 111. 1 H-NMR spectrum of a compound with integration values in red is given below.
Answer the following:
(a) write the signals in the 'H-NMR spectrum to the corresponding protons on the structure
of the molecule below.
(b) Identify the theoretical multiplicities for each proton in the compound. Also give the possible.
complex splitting patterns assuming J values are not similar.
там
Br
22
2
3
6
4 7.2 7.0 6.8 6.6 6.4 6.2 6.0 5.8 5.6 5.4 5.2 5.0 4.8 4.6 4.4 4.2 4.0 3.8 3.6 3.4 3.2 3.0 2.8 2.6 2.4 2.2 2.0 1.8 1.6 1.4 1.2 1.0 0.8 0
Chemical Shift (ppm)
ra.
Br
2
3
6
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
1.0
0.9
0.8
Chemical Shift (ppm)
2
2
Br
7.3
7.2
7.1
7.0 6.9
6.7 6.6 6.5
6.4
6.3
6.2
6.1
6.0
Chemical Shift (ppm)
5.9
5.8 5.7
5.5 5.4 5.3 5.2
5.0 4.9
1600°
1538°C
1493°C
In the diagram, the letter L indicates
that it is a liquid. Indicate its
components in the upper region
where only L is indicated.
The
iron-iron carbide phase
diagram.
Temperature (°C)
1400
8
1394°C
y+L
1200
2.14
y, Austenite
10000
912°C
800a
0.76
0.022
600
400
(Fe)
a, Ferrite
Composition (at% C)
15
1147°C
a + Fe3C
2
3
Composition (wt% C)
L
2500
4.30
2000
y + Fe3C
727°C
1500
Cementite (Fe3C)
1000
4
5
6
6.70
Temperature (°F)
Chapter 6 Solutions
Principles of General Chemistry
Ch. 6 - Prob. 6.1PCh. 6 - An adiabatic process is one that involves no heat...Ch. 6 - Name a common device used to accomplish each...Ch. 6 - Prob. 6.4PCh. 6 - A system receives 425 J of heat from and delivers...Ch. 6 - A system releases 255 cal of heat to the...Ch. 6 - Prob. 6.7PCh. 6 - Prob. 6.8PCh. 6 - The nutritional calorie (Calorie) is equivalent to...Ch. 6 - Classify the following processes as exothermic or...
Ch. 6 - Why can we measure only changes in enthalpy, not...Ch. 6 - Draw an enthalpy diagram for a general exothermic...Ch. 6 - Prob. 6.13PCh. 6 - Prob. 6.14PCh. 6 - Prob. 6.15PCh. 6 - Write a balanced equaĂ¼on and draw an approximate...Ch. 6 - Write a balanced equation and draw an approximate...Ch. 6 - The circles represent a phase change at constant...Ch. 6 - The scenes below represent a physical change...Ch. 6 - What data do you need to determine the specific...Ch. 6 - Is the specific heat capacity of a substance an...Ch. 6 - Find q when 22.0 g of water is heated from 25.0C...Ch. 6 - Prob. 6.23PCh. 6 - A 295-g aluminum engine part at an initial...Ch. 6 - A 27.7-g sample of the radiator coolant ethylene...Ch. 6 - Two iron bolts of equal mass-one at 100.C, the...Ch. 6 - Prob. 6.27PCh. 6 - When 155 mL of water at 26C is mixed with 75 mL of...Ch. 6 - Prob. 6.29PCh. 6 - Prob. 6.30PCh. 6 - Prob. 6.31PCh. 6 - When 25.0 mL of 0.500MH2SO4 is added to 25.0 mL of...Ch. 6 - Would you expect O2(g)20(g) to have a positive or...Ch. 6 - Is H positive or negative when 1 mol of water...Ch. 6 - Prob. 6.35PCh. 6 - Consider the following balanced thermochemical...Ch. 6 - When 1 mol of NO(g) forms from Its elements, 90.29...Ch. 6 - Prob. 6.38PCh. 6 - Liquid hydrogen peroxide, an oxidizing agent in...Ch. 6 - Prob. 6.40PCh. 6 - Most ethylene (C2H4), the starting material for...Ch. 6 - Prob. 6.42PCh. 6 - Prob. 6.43PCh. 6 - Calculate H for Ca(s)+12O2(g)+CO2(g)CaCO3(s) Given...Ch. 6 - Calculate H for 2NOCl(g)N2(g)+O2(g)+Cl2(g) given...Ch. 6 - Write the balanced overall equation (equation 3)...Ch. 6 - Write the balanced overall equation (equation 3)...Ch. 6 - Diamond and graphite are two crystalline forms of...Ch. 6 - Prob. 6.49PCh. 6 - Prob. 6.50PCh. 6 - Use Table 6.3 or Appendix B to write a balanced...Ch. 6 - Prob. 6.52PCh. 6 - Calculate Hrxno for each of the following:...Ch. 6 - Calculate Hrxno for each of the following:...Ch. 6 - Copper(I) oxide can be oxidized to copperr (II)...Ch. 6 - Prob. 6.56PCh. 6 - Nitroglycerine, C3H5(NO3)3(l), a powerful...Ch. 6 - The common lead-acid car battery produces a large...Ch. 6 - Stearic acid (C18H36O2) is a fatty acid, a...Ch. 6 - A ballonist begins a trip in a helium-filled...Ch. 6 - Prob. 6.61PCh. 6 - Prob. 6.62PCh. 6 - Prob. 6.63PCh. 6 - Prob. 6.64PCh. 6 - Four 50.-g sample of different liquids are placed...Ch. 6 - When simple sugars, called monosaccharides, link...Ch. 6 - Reaction of gaseous CIF with F2 yields liquid...Ch. 6 - Prob. 6.68PCh. 6 - When organic matter decomposes under oxygen-free...Ch. 6 - The heat of atomization (Hatomo) is the heat...Ch. 6 - Prob. 6.71PCh. 6 - Prob. 6.72PCh. 6 - An aqueous wastes stream with a maximum...Ch. 6 - Kerosene, a common space-heater fuel, is a mixture...Ch. 6 - Prob. 6.75PCh. 6 - Phosphorus pentachloride is used in the industrial...Ch. 6 - Prob. 6.77PCh. 6 - Silicon tetrachloride is produced annually on the...Ch. 6 - Prob. 6.79PCh. 6 - You want to determine Ho for the reaction...Ch. 6 - Prob. 6.81PCh. 6 - Prob. 6.82PCh. 6 - Liquid methanol (CH3OH) can be used as an...Ch. 6 - How much heat is released when 25.0 g of methane...
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- Nonearrow_forwardPart II. Given below are the 'H-NMR spectrum at 300 MHz in CDC13 and mass spectrum using electron ionization of compound Brian. The FTIR of the said compound showed a strong peak at 1710 cm"). Determine the following: (a) molecular Formula and Degree of unsaturation of compound Brian (b) Basing on the given H-NMR spectrum tabulate the following (i) chemical shifts (ii) integration, ciii) multiplicity and (iv) interferences made for each signal (c) Draw the structure of compound Brian. ) ΕΙ 43 41 27 71 114 (M+) Hmmm 20 30 40 50 60 70 80 90 100 110 120 1H NMR spectrum 300 MHz in CDCl3 2.0 alle 1.0arrow_forwardThe iron-iron carbide phase diagram. In the diagram, the letter L indicates that it is a liquid. Indicate what its components are. Temperature (°C) 1600 10 Composition (at% C) 15 25 1538°C -1493°C 8 1400 1200 1394°C y+L L 2500 1147°C y. Austenite 2.14 4.30 2000 1000 912°C y + Fe3C 800ㅏ 0.76 0.022 600 a, Ferrite a + Fe3C 400 0 (Fe) Composition (wt% C) 727°C 1500 Cementite (Fe3C) 1000 6 6.70 Temperature (°F)arrow_forward
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