Chemistry
4th Edition
ISBN: 9780078021527
Author: Julia Burdge
Publisher: McGraw-Hill Education
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Textbook Question
Chapter 8, Problem 91AP
Describe some characteristics of an ionic compound such as KF that would distinguish it from a covalent compound such as benzene
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Consider the following compounds: CaCl 2 , CaI 2 , and MgCl 2 . Answer the following questions based on expected periodic trends: (a) Which is expected to have t he shortest ionic bonds? (b) Which is expected to have the highest lattice energy? (c) Which is expected to have the lowest melting point?
Consider the following compounds: BeCl 2 , MgBr 2 , and SrBr 2 . Answer the following questions based on expected periodic trends:
(a) Which is expected to have the shortest ionic bonds?
(b) Which is expected to have the highest lattice energy?
(c) Which is expected to have the lowest melting point?
Answer the following questions that relate to the chemistry of nitrogen.
(a) Two nitrogen atoms combine to form a nitrogen molecule, as represented by the following equation.
2 N(g) ® N2(g)
Using the table of average bond energies below, determine the enthalpy change, AH, for the reaction.
Average Bond
Energy (k) mol-1)
Bond
N-N
160
N=N
420
N°N
950
(b) The reaction between nitrogen and hydrogen to form ammonia is represented below.
N2(g) + 3 H2(g)® 2 NH3(g)
AH° = -92.2 kJ
Predict the sign of the standard entropy change, AS', for the reaction. Justify your answer.
(C) The value of AG° for the reaction represented in part (b) is negative at low temperatures but positive at high temperatures. Explain.
Chapter 8 Solutions
Chemistry
Ch. 8.1 - Practice ProblemATTEMPT Write Lewis dot symbols...Ch. 8.1 - Practice Problem BUILD
Indicate the charge on...Ch. 8.1 - Practice ProblemCONCEPTUALIZE For each of the...Ch. 8.1 - 8.1.1 Using only a periodic table, determine the...Ch. 8.1 - 8.1.2 Using only a periodic table, determine the...Ch. 8.1 - To which group does element X belong if its Lewis...Ch. 8.1 - Prob. 4CPCh. 8.2 - Prob. 1PPACh. 8.2 - Practice ProblemBUILD Arrange the compounds NaF,...Ch. 8.2 - Practice ProblemCONCEPTUALIZE Common ions of four...
Ch. 8.2 - 8.2.1 Will the lattice energy of KF be larger or...Ch. 8.2 - 8.2.2 Using the following data, calculate the...Ch. 8.2 - 8.2.3 Lattice energies are graphed for three...Ch. 8.3 - Practice ProblemATTEMPT Using data from Figures...Ch. 8.3 - Prob. 1PPBCh. 8.3 - Prob. 1PPCCh. 8.4 - Practice Problem ATTEMPT Classify the following...Ch. 8.4 - Prob. 1PPBCh. 8.4 - Prob. 1PPCCh. 8.4 - In which of the following molecules are the bonds...Ch. 8.4 - Using data from Table 8.5, calculate the magnitude...Ch. 8.4 - Prob. 3CPCh. 8.4 - Prob. 4CPCh. 8.5 - Prob. 1PPACh. 8.5 - Prob. 1PPBCh. 8.5 - Prob. 1PPCCh. 8.5 - Identify the correct Lewis structure for formic...Ch. 8.5 - Identity the correct Lewis structure for hydrogen...Ch. 8.6 - Prob. 1PPACh. 8.6 - Prob. 1PPBCh. 8.6 - Prob. 1PPCCh. 8.6 - Determine the formal charges on H, C, and N,...Ch. 8.6 - 8.6.2 Which of the Lewis structures shown is most...Ch. 8.7 - Prob. 1PPACh. 8.7 - Practice ProblemBUILD Draw the Lewis structure for...Ch. 8.7 - Practice Problem CONCEPTUALIZE
Of the three Lewis...Ch. 8.7 - Indicate which of the following are resonance...Ch. 8.7 - 8.7.2 How many resonance structures can be drawn...Ch. 8.8 - Prob. 1PPACh. 8.8 - Prob. 1PPBCh. 8.8 - Practice Problem CONCEPTUALIZE
The hypothetical...Ch. 8.8 - In which of the following species does the central...Ch. 8.8 - Prob. 2CPCh. 8.8 - In which species does the central atom obey the...Ch. 8.8 - 8.8.4 How many lone pairs are there on the central...Ch. 8.9 - Prob. 1PPACh. 8.9 - Practice ProblemBUILD Use Lewis structures and...Ch. 8.9 - Prob. 1PPCCh. 8.9 - 8.9.1 Use data from Table 8.6 to estimate for the...Ch. 8.9 - Use data from Table 8.6 to estimate Δ H rxn for...Ch. 8.9 - Use bond enthalpies to determine Δ H rxn for the...Ch. 8.9 - Prob. 4CPCh. 8.10 - Practice ProblemATTEMPT Draw all possible...Ch. 8.10 - Prob. 1PPBCh. 8.10 - Practice ProblemCONCEPTUALIZE The Lewis structure...Ch. 8.11 - Prob. 1PPACh. 8.11 - Prob. 1PPBCh. 8.11 - Prob. 1PPCCh. 8.12 - Prob. 1PPACh. 8.12 - Prob. 1PPBCh. 8.12 - Prob. 1PPCCh. 8.13 - Prob. 1PPACh. 8.13 - Practice Problem BUILD
Using the following...Ch. 8.13 - Prob. 1PPCCh. 8 - 8.1
Which of the following atoms must always obey...Ch. 8 - Prob. 2KSPCh. 8 - Prob. 3KSPCh. 8 - Prob. 4KSPCh. 8 - What is a Lewis dot symbol? What elements do we...Ch. 8 - Use the second member of each group from Group 1A...Ch. 8 - Prob. 3QPCh. 8 - 8.4 Write Lewis dot symbols for the following...Ch. 8 - Write Lewis dot symbols for the following atoms...Ch. 8 - Prob. 6QPCh. 8 - Prob. 7QPCh. 8 - Name five metals and five nonmetals that are very...Ch. 8 - Prob. 9QPCh. 8 - Prob. 10QPCh. 8 - Prob. 11QPCh. 8 - The term molar mass was introduced in Chapter 3....Ch. 8 - Prob. 13QPCh. 8 - Prob. 14QPCh. 8 - Prob. 15QPCh. 8 - Explain how the lattice energy of an ionic...Ch. 8 - Prob. 17QPCh. 8 - Prob. 18QPCh. 8 - 8.19 Use the Born-Haber cycle outlined in Section...Ch. 8 - Calculate the lattice energy of CaCl 2 . Use data...Ch. 8 - An ionic bond is formed between a cation A + and...Ch. 8 - Prob. 22QPCh. 8 - Use Lewis dot symbols to show the transfer of...Ch. 8 - Write the Lewis dot symbols of the reactants and...Ch. 8 - 8.25 Describe Lewis’s contribution to our...Ch. 8 - Prob. 26QPCh. 8 - Prob. 27QPCh. 8 - Prob. 28QPCh. 8 - Prob. 29QPCh. 8 - Prob. 30QPCh. 8 - Prob. 31QPCh. 8 - Prob. 32QPCh. 8 - Prob. 33QPCh. 8 - Define electronegativity, and explain the...Ch. 8 - Prob. 35QPCh. 8 - Prob. 36QPCh. 8 - Prob. 37QPCh. 8 - Using information in Table 8.5. calculate the...Ch. 8 - List the following bonds in order of increasing...Ch. 8 - Classify the following bonds as covalent, polar...Ch. 8 - 8.41 Classify the following bonds as covalent,...Ch. 8 - 8.42 List the following bonds in order of...Ch. 8 - Prob. 43QPCh. 8 - Prob. 44QPCh. 8 - Prob. 45QPCh. 8 - Prob. 46QPCh. 8 - Draw Lewis structures for the following molecules...Ch. 8 - Draw Lewis structures for the following molecules:...Ch. 8 - Prob. 49QPCh. 8 - Prob. 50QPCh. 8 - 8.51 Draw Lewis structures for the following ions:...Ch. 8 - Draw Lewis structures for the following ions: (a)...Ch. 8 - Prob. 53QPCh. 8 - Prob. 54QPCh. 8 - Prob. 55QPCh. 8 - Prob. 56QPCh. 8 - Prob. 57QPCh. 8 - 8.58 Draw three resonance structures for the...Ch. 8 - Prob. 59QPCh. 8 - Prob. 60QPCh. 8 - Draw three reasonable resonance structures for the...Ch. 8 - Draw three resonance structures for the molecule N...Ch. 8 - Prob. 63QPCh. 8 - Prob. 64QPCh. 8 - Prob. 65QPCh. 8 - Prob. 66QPCh. 8 - Prob. 67QPCh. 8 - Prob. 68QPCh. 8 - Prob. 69QPCh. 8 - The AlI 3 molecule has an incomplete octet around...Ch. 8 - Prob. 71QPCh. 8 - Prob. 72QPCh. 8 - 8.73 Write a Lewis structure for Does this...Ch. 8 - Prob. 74QPCh. 8 - Prob. 75QPCh. 8 - 8.76 Draw two resonance structures for the bromate...Ch. 8 - Prob. 77QPCh. 8 - What is bond enthalpy? Bond enthalpies of...Ch. 8 - Prob. 79QPCh. 8 - Prob. 80QPCh. 8 - Prob. 81QPCh. 8 - Prob. 82QPCh. 8 - For the reaction 2 C 2 H 6 ( g ) + 7 O 2 ( g ) → 4...Ch. 8 - Prob. 84QPCh. 8 - 8.85. Use average bond enthalpies from Table 8.6...Ch. 8 - Prob. 86APCh. 8 - Prob. 87APCh. 8 - Prob. 88APCh. 8 - Prob. 89APCh. 8 - Prob. 90APCh. 8 - 8.91 Describe some characteristics of an ionic...Ch. 8 - Prob. 92APCh. 8 - Prob. 93APCh. 8 - Prob. 94APCh. 8 - Prob. 95APCh. 8 - Prob. 96APCh. 8 - Prob. 97APCh. 8 - Prob. 98APCh. 8 - Prob. 99APCh. 8 - Prob. 100APCh. 8 - Prob. 101APCh. 8 - Prob. 102APCh. 8 - Prob. 103APCh. 8 - Prob. 104APCh. 8 - Which of the following species are isoelectronic:...Ch. 8 - Prob. 106APCh. 8 - 8.107 Draw two resonance structures for each...Ch. 8 - The following species have been detected in...Ch. 8 - The amide ion ( NH 2 − ) is a Brø�nsted base. Use...Ch. 8 - Prob. 110QPCh. 8 - The triiodide ion ( I 3 − ) in which the I atoms...Ch. 8 - Prob. 112APCh. 8 - In 1999, an unusual cation containing only...Ch. 8 - Prob. 114APCh. 8 - Prob. 115APCh. 8 - Prob. 116APCh. 8 - In the gas phase, aluminum chloride exists as a...Ch. 8 - Prob. 118APCh. 8 - Calculate Δ H º for the reaction H 2 ( g ) + I 2 (...Ch. 8 - Draw Lewis structures for the following organic...Ch. 8 - Prob. 121APCh. 8 - Prob. 122APCh. 8 - Prob. 123APCh. 8 - Write three resonance structures for (a) the...Ch. 8 - Prob. 125APCh. 8 - Prob. 126APCh. 8 - Prob. 127APCh. 8 - Prob. 128APCh. 8 - Prob. 129APCh. 8 - Prob. 130APCh. 8 - Prob. 131APCh. 8 - Among the common inhaled anesthetics are:...Ch. 8 - Prob. 133QPCh. 8 - Prob. 134QPCh. 8 - Prob. 135QPCh. 8 - 8.136 Using this and data from Appendix 2,...Ch. 8 - Prob. 137QPCh. 8 - Prob. 138APCh. 8 - Prob. 139APCh. 8 - Prob. 140APCh. 8 - Prob. 141APCh. 8 - Prob. 142APCh. 8 - Prob. 143APCh. 8 - Although nitrogen dioxide ( NO 2 ) is a stable...Ch. 8 - 8.145 The chlorine nitrate molecule is believed...Ch. 8 - The hydroxyl radical ( OH ) plays an important...Ch. 8 - Prob. 147APCh. 8 - Prob. 148APCh. 8 - Prob. 1SEPPCh. 8 - 2. Use formal charges to choose the best of the...Ch. 8 - Prob. 3SEPPCh. 8 - Prob. 4SEPP
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