General Chemistry - Standalone book (MindTap Course List)
11th Edition
ISBN: 9781305580343
Author: Steven D. Gammon, Ebbing, Darrell Ebbing, Steven D., Darrell; Gammon, Darrell Ebbing; Steven D. Gammon, Darrell D.; Gammon, Ebbing; Steven D. Gammon; Darrell
Publisher: Cengage Learning
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Textbook Question
Chapter 8, Problem 8.120QP
Calculate ΔH for the following process:
The lattice energy of KBr is 689 kJ/mol, and the ionization energy of K is 419 kJ/mol. The
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The electron affinity of oxygen is -141kj/mol, corresponding to the reaction
O(g)+e-—>O-(g)
The lattice energy of K2O(s) is 2238kj/mol.Use these data along with data in Appendix C and figure 7.10 to calculate the “second electron affinity” of oxygen, corresponding to the reaction
O-(g)+e-—>O2-(g)
Using the following data, calculate the lattice energy of calcium chloride:
Ca2+(g) + 2Cl– (g) → CaCl2(s) ΔHlattice = ?
Sublimation enthalpy of calcium ΔH = 177.8 kJ/mol
First ionization energy of calcium ΔH = 590.2 kJ/mol
Second ionization energy of calcium ΔH = 1144.2 kJ/mol
First electron affinity of chlorine ΔH = –349 kJ/mol
Heat of formation of CaCl2(s) ΔH = –795.4 kJ/mol
Bond energy of Cl2 (see Table 2)
Use Hess’s law to calculate the lattice energy of calcium chloride. set-up must show all the chemical equations and you must show how their H values add up to give your answer.
Use the Born-Haber cycle to calculate the lattice energy of KF. [The heat of sublimation of K is 91.6 kJ·mol−1 and
ΔfH(KF) = −567.3 kJ·mol−1.
Bond enthalpy for F2 is
158.8 kJ·mol−1.
Other data may be found in the Ionization Energies Table and the Electron Affinities Table.]
Chapter 8 Solutions
General Chemistry - Standalone book (MindTap Course List)
Ch. 8.1 - Look at the following orbital diagrams and...Ch. 8.2 - Imagine a world in which the Pauli principle is No...Ch. 8.3 - Use the building-up principle to obtain the...Ch. 8.3 - Prob. 8.3ECh. 8.3 - Prob. 8.4ECh. 8.3 - Prob. 8.2CCCh. 8.4 - Write an orbital diagram for the ground state of...Ch. 8.6 - Prob. 8.6ECh. 8.6 - The first ionization energy of the chlorine atom...Ch. 8.6 - Prob. 8.8E
Ch. 8.6 - Prob. 8.3CCCh. 8.7 - Prob. 8.4CCCh. 8 - Describe the experiment of Stern and Gerlach. How...Ch. 8 - Prob. 8.2QPCh. 8 - Prob. 8.3QPCh. 8 - What is the maximum number of electrons that can...Ch. 8 - List the orbitals in order of increasing orbital...Ch. 8 - Prob. 8.6QPCh. 8 - Prob. 8.7QPCh. 8 - Prob. 8.8QPCh. 8 - Prob. 8.9QPCh. 8 - Prob. 8.10QPCh. 8 - Describe the major trends that emerge when atomic...Ch. 8 - Prob. 8.12QPCh. 8 - What main group in the periodic table has elements...Ch. 8 - Prob. 8.14QPCh. 8 - Prob. 8.15QPCh. 8 - Prob. 8.16QPCh. 8 - What is the name of the alkali metal atom with...Ch. 8 - What would you predict for the atomic number of...Ch. 8 - Prob. 8.19QPCh. 8 - Prob. 8.20QPCh. 8 - Prob. 8.21QPCh. 8 - Prob. 8.22QPCh. 8 - Prob. 8.23QPCh. 8 - Prob. 8.24QPCh. 8 - Prob. 8.25QPCh. 8 - Which of the following atoms, designated by their...Ch. 8 - Prob. 8.27QPCh. 8 - Prob. 8.28QPCh. 8 - Periodic Properties I A hypothetical element, X,...Ch. 8 - Prob. 8.30QPCh. 8 - Prob. 8.31QPCh. 8 - Prob. 8.32QPCh. 8 - Prob. 8.33QPCh. 8 - Prob. 8.34QPCh. 8 - Prob. 8.35QPCh. 8 - Prob. 8.36QPCh. 8 - Two elements are in the same group, one following...Ch. 8 - Prob. 8.38QPCh. 8 - Prob. 8.39QPCh. 8 - Prob. 8.40QPCh. 8 - Which of the following orbital diagrams are...Ch. 8 - Which of the following orbital diagrams are...Ch. 8 - Which of the following electron configurations are...Ch. 8 - Choose the electron configurations that are...Ch. 8 - Write all of the possible orbital diagrams for the...Ch. 8 - Prob. 8.46QPCh. 8 - Prob. 8.47QPCh. 8 - Use the building-up principle to obtain the...Ch. 8 - Use the building-up principle to obtain the...Ch. 8 - Give the electron configuration of the ground...Ch. 8 - Barium is a Group 2A element in Period 6. Deduce...Ch. 8 - Bismuth is a Group 5A element in Period 6. Write...Ch. 8 - Tungsten is a Group 6B element in Period 6. What...Ch. 8 - Manganese is a Group 7B element in Period 4. What...Ch. 8 - Thallium has the ground-state configuration...Ch. 8 - The configuration for the ground state of iridium...Ch. 8 - Write the orbital diagram for the ground state of...Ch. 8 - Prob. 8.58QPCh. 8 - Write an orbital diagram for the ground state of...Ch. 8 - Write an orbital diagram for the ground state of...Ch. 8 - Order the following elements by increasing atomic...Ch. 8 - Using periodic trends, arrange the following...Ch. 8 - Using periodic trends, arrange the following...Ch. 8 - Arrange the following elements in order of...Ch. 8 - From what you know in a general way about electron...Ch. 8 - Prob. 8.66QPCh. 8 - If potassium chlorate has the formula KClO3, what...Ch. 8 - Prob. 8.68QPCh. 8 - Write the complete ground-state electron...Ch. 8 - Prob. 8.70QPCh. 8 - Obtain the valence-shell configuration of the...Ch. 8 - Prob. 8.72QPCh. 8 - Write the orbital diagram for the ground state of...Ch. 8 - Prob. 8.74QPCh. 8 - Prob. 8.75QPCh. 8 - Prob. 8.76QPCh. 8 - From Figure 8.18, predict the first ionization...Ch. 8 - Prob. 8.78QPCh. 8 - Prob. 8.79QPCh. 8 - Prob. 8.80QPCh. 8 - Prob. 8.81QPCh. 8 - Match each element on the right with a set of...Ch. 8 - Find the electron configuration of the element...Ch. 8 - Find the electron configuration of the element...Ch. 8 - Prob. 8.85QPCh. 8 - Prob. 8.86QPCh. 8 - Prob. 8.87QPCh. 8 - Prob. 8.88QPCh. 8 - Prob. 8.89QPCh. 8 - Prob. 8.90QPCh. 8 - The following are orbital diagrams for presumed...Ch. 8 - Prob. 8.92QPCh. 8 - A metallic element, M, reacts vigorously with...Ch. 8 - A nonmetallic element, R, burns brightly in air to...Ch. 8 - The ground-state electron configuration of an atom...Ch. 8 - Prob. 8.96QPCh. 8 - Prob. 8.97QPCh. 8 - Prob. 8.98QPCh. 8 - Prob. 8.99QPCh. 8 - A neutral atom has the electron configuration...Ch. 8 - Prob. 8.101QPCh. 8 - A metallic element reacts vigorously with water,...Ch. 8 - Prob. 8.103QPCh. 8 - Prob. 8.104QPCh. 8 - Prob. 8.105QPCh. 8 - Prob. 8.106QPCh. 8 - An atom easily loses two electrons to form the ion...Ch. 8 - Prob. 8.108QPCh. 8 - Prob. 8.109QPCh. 8 - The electron affinity of the lutetium atom...Ch. 8 - Prob. 8.111QPCh. 8 - Prob. 8.112QPCh. 8 - Prob. 8.113QPCh. 8 - Prob. 8.114QPCh. 8 - How much energy would be required to ionize 5.00...Ch. 8 - Prob. 8.116QPCh. 8 - Prob. 8.117QPCh. 8 - Prob. 8.118QPCh. 8 - The lattice energy of an ionic solid such as NaCl...Ch. 8 - Calculate H for the following process:...
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- Which compound in each of the following pairs of ionic substances has the most negative lattice energy? Justify your answers. a. LiF, CsF b. NaBr, NaI c. BaCl2, BaO d. Na2SO4, CaSO4 e. KF, K2O f. Li2O, Na2Sarrow_forwardDefine the term lattice energy. Why, energetically, do ionic compounds form? Fig. 3-8 illustrates the energy changes involved in the formation of MgO(s) and NaF(s). Why is the lattice energy of MgO(s) so different from that of NaF(s)? The magnesium oxide is composed of Mg2+ and O2 ions. Energetically, why does Mg2+O2 form and not Mg+O? Why doesnt Mg3+O3 form?arrow_forwardUsing the standard enthalpy of formation data in Appendix G, calculate the bond energy of the carbon-sulfur double bond in CS2.arrow_forward
- n your own words, what is meant by the term electronegativity? What are the trends across and down the periodic table for electronegativity? Explain them, and describe how they are consistent with trends of ionization energy and atomic radii.arrow_forwardBond Enthalpy When atoms of the hypothetical element X are placed together, they rapidly undergo reaction to form the X2 molecule: X(g)+X(g)X2(g) a Would you predict that this reaction is exothermic or endothermic? Explain. b Is the bond enthalpy of X2 a positive or a negative quantity? Why? c Suppose H for the reaction is 500 kJ/mol. Estimate the bond enthalpy of the X2 molecule. d Another hypothetical molecular compound, Y2(g), has a bond enthalpy of 750 kJ/mol, and the molecular compound XY(g) has a bond enthalpy of 1500 kJ/mol. Using bond enthalpy information, calculate H for the following reaction. X2(g)+Y2(g)2XY(g) e Given the following information, as well as the information previously presented, predict whether or not the hypothetical ionic compound AX is likely to form. In this compound, A forms the A+ cation, and X forms the X anion. Be sure to justify your answer. Reaction: A(g)+12X2(g)AX(s)The first ionization energy of A(g) is 400 kJ/mol. The electron affinity of X(g) is 525 kJ/mol. The lattice energy of AX(s) is 100 kJ/mol. f If you predicted that no ionic compound would form from the reaction in Part e, what minimum amount of AX(s) lattice energy might lead to compound formation?arrow_forwardUse the following data to estimate Δ Hf° for barium chloride. Ba (s) + Cl2 (g) ⟶ BaCl2 (s) Lattice energy = -2056 kJ/mol First ionization energy of Ba = 503 kJ/mol Second ionization energy of Ba = 965 kJ/mol Electron affinity of Cl = -349 kJ/mol Bond energy of Cl2 = 239 kJ/mol Enthalpy of sublimation of Ba = 178 kJ/molarrow_forward
- 5. Consider the following information: 1st ionization energy of Na(g) = 495.8 kJ/mol Bond dissociation energy of O2(g) = 498.4 kJ/mol 1st electron affinity of O(g)=-142.5 kJ/mol 2nd electron affinity of O¹(g) = 844 kJ/mol Lattice energy of Na2O(s) = -2608 kJ/mol Enthalpy of formation of Na2O(s) = -416 kJ/mol a Draw the Born-Haber cycle for Na₂O(s). b Calculate the unknown. 120 C Draw the Lewis symbol for Na₂O.arrow_forwardCalculate the lattice energy of NaCl(s) using the following thermodynamic data (all data is in kJ/mol). Note that the data given has been perturbed, so looking up the answer is probably not a good idea. Na(s) ΔHsublimation = 88 kJ/mol Na(g) Ionization energy = 476 kJ/mol Cl-Cl(g) Bond energy = 223 kJ/mol Cl(g) Electron affinity = -369 kJ/mol NaCl(s) ΔH°f = -431 kJ/mol ____________ kJ/molarrow_forwardThe standard heat of formation of BaBr2BaBr2 is −−764 kJ/molkJ/mol. The first ionization energy of BaBa is 503 kJ/molkJ/mol and its second ionization energy is 965 kJ/molkJ/mol. The heat of sublimation of Ba[Ba(s)→Ba(g)]Ba[Ba(s)→Ba(g)] is 175 kJ/molkJ/mol. The bond energy of Br2Br2 is 193 kJ/molkJ/mol, the heat of vaporization of Br2(l)Br2(l) is 31 kJ/molkJ/mol, and the electron affinity of BrBr is −−325 kJ/molkJ/mol. Calculate the lattice energy of BaBr2BaBr2.arrow_forward
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