CHEMISTRY-TEXT
8th Edition
ISBN: 9780134856230
Author: Robinson
Publisher: PEARSON
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Chapter 9, Problem 9.76SP
Interpretation Introduction
Interpretation:
The difference between heat capacity and specific heat needs to be explained.
Concept introduction:
The heat capacity is the amount of heat needed to increase the temperature of a substance of given amount. The specific heat capacity is the amount of heat important to increase the temperature of 1 g of substance by
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Relative Intensity
Part VI. consider the multi-step reaction below for compounds
A, B, and C.
These compounds were subjected to mass spectrometric analysis and
the following spectra for A, B, and C was obtained.
Draw the structure of B and C and match all three compounds
to the correct spectra.
Relative Intensity
Relative Intensity
100
HS-NJ-0547
80
60
31
20
S1
84
M+
absent
10
30
40
50
60
70
80
90
100
100-
MS2016-05353CM
80-
60
40
20
135 137
S2
164 166
0-m
25
50
75
100
125
150
m/z
60
100
MS-NJ-09-43
40
20
20
80
45
S3
25
50
75
100
125
150
175
m/z
Part II. Given two isomers: 2-methylpentane (A) and 2,2-dimethyl butane (B) answer the following:
(a) match structures of isomers given their mass spectra below (spectra A and spectra B)
(b) Draw the fragments given the following prominent peaks from
each spectrum:
Spectra A m/2 =43 and 1/2-57
spectra B m/2 = 43
(c) why is 1/2=57 peak in spectrum A more intense compared
to the same peak in spectrum B.
Relative abundance
Relative abundance
100
A
50
29
29
0
10
-0
-0
100
B
50
720
30
41
43
57
71
4-0
40
50
60 70
m/z
43
57
8-0
m/z = 86
M
90 100
71
m/z = 86
M
-O
0
10 20 30
40 50
60
70
80
-88
m/z
90
100
Part IV. C6H5 CH2CH2OH is an aromatic compound which was subjected to Electron Ionization - mass
spectrometry (El-MS) analysis. Prominent m/2 values: m/2 = 104 and m/2 = 9) was obtained.
Draw the structures of these fragments.
Chapter 9 Solutions
CHEMISTRY-TEXT
Ch. 9 - Prob. 9.1PCh. 9 - Conceptual APPLY 9.2 How much work is done in...Ch. 9 - PRACTICE 9.3 The reaction between hydrogen and...Ch. 9 - Conceptual APPLY 9.4 The following reaction has E...Ch. 9 - Use the following thermo chemical equation to...Ch. 9 - APPLY 9.6 Approximately, 1.8106 kJ of energy is...Ch. 9 - Classify the following reaction as end o- or ex...Ch. 9 - APPLY 9.8 Instant hot packs and cold packs contain...Ch. 9 - PRACTICE 9.9 What is the specific heat of lead in...Ch. 9 - APPLY 9.10 Calculate the heat capacity (C) of a...
Ch. 9 - PRACTICE 9.11 When 25.0 mL of 1.0 M H2SO4 is added...Ch. 9 - Prob. 9.12ACh. 9 - When 1.00 g of toluene, C7H8, is burned in a bomb...Ch. 9 - Prob. 9.14PCh. 9 - Water gas is the name for the mixture of CO and H2...Ch. 9 - Prob. 9.16ACh. 9 - Prob. 9.17PCh. 9 - Prob. 9.18ACh. 9 - Use the data in Table 9.3 to calculate an...Ch. 9 - Benzene ( C6H6 ) has two resonance structures,...Ch. 9 - Prob. 9.21PCh. 9 - Prob. 9.22ACh. 9 - Prob. 9.23PCh. 9 - Prob. 9.24ACh. 9 - Prob. 9.25PCh. 9 - Prob. 9.26ACh. 9 - Prob. 9.27PCh. 9 - Prob. 9.28PCh. 9 - Prob. 9.29PCh. 9 - Prob. 9.30PCh. 9 - Prob. 9.31PCh. 9 - Prob. 9.32PCh. 9 - PROBLEM 9.33 A 12.0 gallon hold 39.9 kg of...Ch. 9 - A piece of dry ice (solid CO2) is placed inside a...Ch. 9 - Imagine a reaction that results in a change in...Ch. 9 - 9.32 Redraw the following diagram to represent the...Ch. 9 - 9.33 A reaction is carried out in a cylinder...Ch. 9 - Prob. 9.38CPCh. 9 - Prob. 9.39CPCh. 9 - Prob. 9.40CPCh. 9 - Prob. 9.41CPCh. 9 - Prob. 9.42CPCh. 9 - Prob. 9.43CPCh. 9 - What is the difference between heat and...Ch. 9 - What is internal energy?Ch. 9 - Prob. 9.46SPCh. 9 - Prob. 9.47SPCh. 9 - Which of the following are state functions, and...Ch. 9 - Prob. 9.49SPCh. 9 - Calculate the work done in joules by a chemical...Ch. 9 - The addition of H2 to C=C double bonds is an...Ch. 9 - Prob. 9.52SPCh. 9 - Prob. 9.53SPCh. 9 - 9.50 A reaction inside a cylindrical container...Ch. 9 - At a constant pressure of 0.905 atm, a chemical...Ch. 9 - RANWhen a sample of a hydrocarbon fuel is ignited...Ch. 9 - Used in welding metals, the reaction of acetylene...Ch. 9 - What is the difference between the internal energy...Ch. 9 - Prob. 9.59SPCh. 9 - The explosion of 2.00 mol of solid trinitrotoluene...Ch. 9 - The reaction between hydrogen and oxygen to yield...Ch. 9 - The enthalpy change for the reaction of 50.0 mL of...Ch. 9 - Assume that a particular reaction evolves 244 kJ...Ch. 9 - What is the enthalpy change ( H ) for a reaction...Ch. 9 - Prob. 9.65SPCh. 9 - Indicate the direction of heat transfer between...Ch. 9 - Indicate the direction of heat transfer between...Ch. 9 - The familiar "ether" used as an anesthetic agent...Ch. 9 - How much energy in kilojoules is required to...Ch. 9 - Aluminum metal reacts with chlorine with a...Ch. 9 - How much heat in kilojoules is evolved or absorbed...Ch. 9 - How much heat in kilojoules is evolved or absorbed...Ch. 9 - Nitromethane sometimes used as a fuel in drag...Ch. 9 - Prob. 9.74SPCh. 9 - How much heat in kilojoules is evolved or absorbed...Ch. 9 - Prob. 9.76SPCh. 9 - Prob. 9.77SPCh. 9 - Sodium metal is sometimes used as a cooling agent...Ch. 9 - Prob. 9.79SPCh. 9 - Assuming that Coca-Cola has the same specific heat...Ch. 9 - Calculate the amount of heat required to raise the...Ch. 9 - Instant cold packs used to treat athletic injuries...Ch. 9 - Instant hot packs contain a solid and a pouch of...Ch. 9 - When 1.045 g of CaO is added to 50.0 mL of water...Ch. 9 - When a solution containing 8.00 g of NaOH in 50.0...Ch. 9 - When 0.187 g of benzene, C6H6 , is burned in a...Ch. 9 - When 0.500 g of ethanol, C2H6O, is burned in a...Ch. 9 - When 1.50 g of magnesium metal is allowed to react...Ch. 9 - A 110.0 g piece of molybdenum metal is heated to...Ch. 9 - Citric acid has three dissociable hydrogens. When...Ch. 9 - Prob. 9.91SPCh. 9 - Prob. 9.92SPCh. 9 - Prob. 9.93SPCh. 9 - The industrial degreasing solvent methylene...Ch. 9 - Hess's law can be used to calculate reaction...Ch. 9 - Find H in kilojoules for the reaction of nitric...Ch. 9 - Set up a Hess's law cycle, and use the following...Ch. 9 - Prob. 9.98SPCh. 9 - Prob. 9.99SPCh. 9 - What phase of matter is associated with the...Ch. 9 - What is the phase of the standard states of the...Ch. 9 - Write balanced equations for the formation of the...Ch. 9 - Prob. 9.103SPCh. 9 - Prob. 9.104SPCh. 9 - Prob. 9.105SPCh. 9 - The standard enthalpy change for the reaction of...Ch. 9 - Prob. 9.107SPCh. 9 - Styrene ( C8H8 ), the precursor of polystyrene...Ch. 9 - Prob. 9.109SPCh. 9 - Prob. 9.110SPCh. 9 - Prob. 9.111SPCh. 9 - Prob. 9.112SPCh. 9 - Prob. 9.113SPCh. 9 - Prob. 9.114SPCh. 9 - Prob. 9.115SPCh. 9 - Prob. 9.116SPCh. 9 - Isooctane, C8H18, is the component of gasoline...Ch. 9 - Calculate an approximate heat of combustion for...Ch. 9 - Use the data in Table 9.3 to calculate an...Ch. 9 - Use the average bond dissociation energies in...Ch. 9 - Use the bond dissociation energies in Table 9.3 to...Ch. 9 - Prob. 9.122SPCh. 9 - Prob. 9.123SPCh. 9 - Prob. 9.124SPCh. 9 - Prob. 9.125SPCh. 9 - Tell whether the entropy changes for the following...Ch. 9 - Prob. 9.127SPCh. 9 - Prob. 9.128SPCh. 9 - Prob. 9.129SPCh. 9 - Prob. 9.130SPCh. 9 - Prob. 9.131SPCh. 9 - Tell whether reactions with the following values...Ch. 9 - Tell whether reactions with the following values...Ch. 9 - Suppose that a reaction has H=33kJ and S=58J/K. At...Ch. 9 - Suppose that a reaction has H=+41kJ and S=27J/K....Ch. 9 - Which of the reactions (a)-(d) in Problem 9.132...Ch. 9 - Vinyl chloride (H2C=CHCI), the starting material...Ch. 9 - Ethyl alcohol has Hfusion=5.02kJ/mol and melts at...Ch. 9 - Chloroform has Hvaporization=29.2kJ/mol and boils...Ch. 9 - The boiling point of a substance is defined as the...Ch. 9 - What is the melting point of benzene in kelvin if...Ch. 9 - Prob. 9.142SPCh. 9 - Methanol (CH3OH) is made industrially in two steps...Ch. 9 - Ethyl chloride ( C2H5CI ), a substance used as a...Ch. 9 - Prob. 9.145MPCh. 9 - For a process to be spontaneous, the total entropy...Ch. 9 - Prob. 9.147MPCh. 9 - Prob. 9.148MPCh. 9 - Prob. 9.149MPCh. 9 - Prob. 9.150MPCh. 9 - Phosgene, COCI2(g), is a toxic gas used as an...Ch. 9 - Prob. 9.152MPCh. 9 - Write a balanced equation for the reaction of...Ch. 9 - Hydrazine, a component of rocket fuel, undergoes...Ch. 9 - Prob. 9.155MP
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