Chemistry the Central Science 13th Edition Custom for Lamar University
13th Edition
ISBN: 9781269962667
Author: Theodore L. Brown, H. Eugene LeMay Jr., Bruce E. Bursten, Batherine J. Murphy, Patrick M. Woodward, Matthew W. Stoltzfus
Publisher: Pearson Learning Center
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Chapter 11, Problem 78AE
Interpretation Introduction
Interpretation:
The given order of boiling points is to be explained.
Concept introduction: When an atom or a group of atoms is substituted for an H atom in benzene, the boiling point changes. The order of increasing molar mass is the order of increasing boiling points.
To determine: An explanation for the given order of boiling points.
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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 11 Solutions
Chemistry the Central Science 13th Edition Custom for Lamar University
Ch. 11.2 - Only two isotopes of copper occur naturally:63Cu...Ch. 11.2 - 2.36 Rubidium has two naturally occurring...Ch. 11.3 - a. Thomson’s cathode-ray tube (Figure 2.49) and...Ch. 11.3 -
2.38 Consider the mass spectrometer shown in...Ch. 11.4 - Naturally occurring magnesium has the following...Ch. 11.4 - Mass spectrometry is more often applied to...Ch. 11.5 - 2-41 For each of the following elements, write its...Ch. 11.5 - Locate each of the following elements in the...Ch. 11.6 - 2-43 For each of the following elements, write its...Ch. 11.6 - 2.44 The elements of group 4A show an interesting...
Ch. 11.7 - 2.45 The structural formulas of the compounds...Ch. 11.7 - 2.46 Ball-and-stick representations of benzene, a...Ch. 11 - Prob. 1DECh. 11 - 2.59 Using the periodic table to guide you,...Ch. 11 -
2.71 Name the following ionic compounds:
a....Ch. 11 -
2.83
What is a functional group?
What functional...Ch. 11 - The element lead (Pb) consists of four naturally...Ch. 11 - Prob. 5ECh. 11 - The molecules have the same molecular formula...Ch. 11 - A sample of an ionic compound containing iron and...Ch. 11 -
The compound dioxane, which is used as a solvent...Ch. 11 - If 3.00 g of titanium metal is reacted with 6.00 g...Ch. 11 -
2.48 Two substances have the same molecular and...Ch. 11 - 2.49 Write the empirical formula corresponding to...Ch. 11 - Determine the molecular and empirical formulas of...Ch. 11 - 251 How many hydrogen atoms are un each of the...Ch. 11 - Prob. 14ECh. 11 - 253 Write the molecular and structural formulas...Ch. 11 - 2-54 Write the molecular and structural formulas...Ch. 11 - Fill in the gaps in the following table’Ch. 11 - 2.56 Fill in the gaps in the following...Ch. 11 - Prob. 19ECh. 11 - Prob. 20ECh. 11 - Predict the chemical formulas of the compounds...Ch. 11 - Prob. 22ECh. 11 - Prob. 23ECh. 11 - Predict whether each of the following compounds is...Ch. 11 - 2.66 Which of the following are ionic, and which...Ch. 11 - Prob. 26ECh. 11 - Prob. 27ECh. 11 -
2.69 Give the names and charges of the cation and...Ch. 11 - Give the names and charges of the cation and anion...Ch. 11 - Prob. 30ECh. 11 -
Give the chemical formula for each of the...Ch. 11 -
2.75 Give the name or chemical formula, as...Ch. 11 - Prob. 33ECh. 11 -
2.T Give the name or Chemical formula, as...Ch. 11 - Prob. 35ECh. 11 - Prob. 36ECh. 11 - Assume that you encounter the following sentences...Ch. 11 - a. What is a hydrocarbon? b. Pentane is the alkane...Ch. 11 - Prob. 39ECh. 11 -
2.85 Chloropropane is derived from propane by...Ch. 11 - Prob. 41ECh. 11 - Suppose a scientist repeats the Millikan oil-drop...Ch. 11 -
2.88 The natural abundance of 3He is...Ch. 11 - A cube of gold that is 1.00 cm on a side has a...Ch. 11 -
2.90 The diameter of a rubidium atom is 4.95 A....Ch. 11 -
2.91
Assuming the dimensions of the nucleus and...Ch. 11 - (a) What is the significance of the critical...Ch. 11 -
2.93 The nucleus of 6Li is a powerful absorber of...Ch. 11 - The element oxygen has three naturally occurring...Ch. 11 - Using a suitable reference such as the CRC...Ch. 11 - There are two different isotopes of bromine atoms....Ch. 11 -
2.99 It is common in mass spectrometry to assume...Ch. 11 - From the following list of elements—Ar, H, Ga, Al,...Ch. 11 - Prob. 54ECh. 11 -
2.102 The explosion of an atomic bomb releases...Ch. 11 - Prob. 56ECh. 11 - Prob. 57ECh. 11 -
2.105 From the molecular structures shown here,...Ch. 11 -
2.106 Name each of the following oxides. Assuming...Ch. 11 - Prob. 60ECh. 11 - Prob. 61ECh. 11 - Give the chemical names of each of the following...Ch. 11 -
2.112 Many familiar substances have common,...Ch. 11 -
2.113 Because many ions and compounds have very...Ch. 11 -
2.114 In what part of the atom does the strong...Ch. 11 - In the following diagram, the white spheres...Ch. 11 - In the following digram, the white spheres...Ch. 11 - Prob. 68ECh. 11 - Balance these equations by providing the missing...Ch. 11 - Write the balanced equation for the reaction that...Ch. 11 - Prob. 71ECh. 11 - Which of the following is the correct formula...Ch. 11 - Prob. 73AECh. 11 - Prob. 74AECh. 11 - Calculate the percentage of potassium by mass in...Ch. 11 - Which of the following samples contains the fewest...Ch. 11 - In dichloromethane, CH2Cl2 (= 1.60D)), the...Ch. 11 - Prob. 78AECh. 11 -
How many oxygen atoms are in (a) 0.25 mol...Ch. 11 - Prob. 80AECh. 11 - Prob. 81AECh. 11 - What is the mass, in grams, of 6.33 mol of NaHC03...Ch. 11 - What is the mass, in grams, of (a) 0.50 mol of...Ch. 11 - How many chlorine atoms are in 12.2 g of CCL4? a....Ch. 11 -
a. How many nitric acid molecules are in 4.20 g...Ch. 11 - A 2.144-g sample of phosgene, a compound used as a...Ch. 11 - A 5.325-g sample of methyl benzoate, a compound...Ch. 11 -
Cyclohexane a commonly used organic solvent, is...Ch. 11 - Prob. 89AECh. 11 - Prob. 90IECh. 11 - Decomposition of KCIO3 is sometimes used to...Ch. 11 - Propane, C3 H8 (Figure 3.8), is a common fuel used...Ch. 11 -
Methanol, CH3OH, reacts with oxygen from air in a...Ch. 11 - When 24 mol of methanol and 15 mol of oxygen...Ch. 11 - a. When 1.50 mol of Al and 3.00 mol of Cl2 combine...Ch. 11 - Molten gallium reacts with arsenic to form the...Ch. 11 -
When a 2.00-g strip of zinc metal is placed in...
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