General Chemistry: Atoms First
2nd Edition
ISBN: 9780321809261
Author: John E. McMurry, Robert C. Fay
Publisher: Prentice Hall
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Chapter 3, Problem 3.84SP
Interpretation Introduction
Interpretation:
The lattice energy during formation of sodium hydride from sodium and hydrogenhas to be calculated.
Concept introduction:
Lattice energy in ionic solids:
- The strength of energy of ionic bonds in a solid is known as lattice energy. It is also defined as energy required for an ionic solid to split up into single gaseous ions.
- Lattice energy increases with increase in charge of ions (that is small sized ions) and decreases with increase in ionic radii.
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Students have asked these similar questions
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.]
Calculate the lattice energy of NaBr(s), given the following thermochemical
equations, where A/E and AEA are ionization energy and electron affinity,
respectively.
Na(s)Na(g) AH = +107 kJ
Na(g) Nat(g) + e A/E = +496 kJ
->
1/2 Br₂(g) → Br(g) AHf = +112 kJ
-
Br(g) + e¯ → Br¯(g) AEA = -325 kJ
Na(s) + 1/2 Br₂(g) → NaBr(s) AH = -361 kJ
->>
-
-1401 kJ
-751 kJ
+29 kJ
-29 kJ
+751 kJ
Chapter 3 Solutions
General Chemistry: Atoms First
Ch. 3.1 - Prob. 3.1PCh. 3.1 - Which of the following drawings is most likely to...Ch. 3.2 - Give systematic names for the following compounds:...Ch. 3.2 - Write formulas for the following compounds: (a)...Ch. 3.2 - Prob. 3.5CPCh. 3.2 - Give systematic names for the following compounds:...Ch. 3.2 - Prob. 3.7PCh. 3.2 - Prob. 3.8CPCh. 3.3 - Predict the ground-state electron configuration...Ch. 3.3 - What doubly positive ion has the following...
Ch. 3.4 - Prob. 3.11PCh. 3.4 - which of the following spheres represents a K+...Ch. 3.5 - Using the periodic table as your guide, predict...Ch. 3.6 - (a) Which has the larger third ionization energy,...Ch. 3.6 - Three atoms have the following electron...Ch. 3.6 - Order the indicated three elements according to...Ch. 3.7 - Prob. 3.17PCh. 3.7 - Which of the indicated three elements has the...Ch. 3.8 - What noble-gas configurations are the following...Ch. 3.8 - Prob. 3.20PCh. 3.9 - Calculate the net energy change in kilojoules per...Ch. 3.10 - Which substance in each of the following pairs has...Ch. 3.10 - One of the following pictures represents NaCl and...Ch. 3.11 - Prob. 3.24PCh. 3.11 - Complete the following equations so that the same...Ch. 3.12 - Prob. 3.26PCh. 3.12 - Prob. 3.27PCh. 3.14 - Prob. 3.28PCh. 3 - In the following drawings, red spheres represent...Ch. 3 - Which of the following drawings is more likely to...Ch. 3 - Prob. 3.31CPCh. 3 - Prob. 3.32CPCh. 3 - Prob. 3.33CPCh. 3 - Prob. 3.34CPCh. 3 - Prob. 3.35CPCh. 3 - Prob. 3.36CPCh. 3 - Prob. 3.37CPCh. 3 - Prob. 3.38SPCh. 3 - Prob. 3.39SPCh. 3 - Prob. 3.40SPCh. 3 - Prob. 3.41SPCh. 3 - Prob. 3.42SPCh. 3 - Prob. 3.43SPCh. 3 - Prob. 3.44SPCh. 3 - Prob. 3.45SPCh. 3 - Prob. 3.46SPCh. 3 - Prob. 3.47SPCh. 3 - Prob. 3.48SPCh. 3 - Prob. 3.49SPCh. 3 - Prob. 3.50SPCh. 3 - Prob. 3.51SPCh. 3 - Prob. 3.52SPCh. 3 - What is the identity of the element X in the...Ch. 3 - Prob. 3.54SPCh. 3 - Prob. 3.55SPCh. 3 - Prob. 3.56SPCh. 3 - Prob. 3.57SPCh. 3 - Prob. 3.58SPCh. 3 - Prob. 3.59SPCh. 3 - Prob. 3.60SPCh. 3 - Prob. 3.61SPCh. 3 - Prob. 3.62SPCh. 3 - Prob. 3.63SPCh. 3 - Prob. 3.64SPCh. 3 - Prob. 3.65SPCh. 3 - Prob. 3.66SPCh. 3 - Prob. 3.67SPCh. 3 - Which element in each of the following sets has...Ch. 3 - Prob. 3.69SPCh. 3 - Prob. 3.70SPCh. 3 - Prob. 3.71SPCh. 3 - Prob. 3.72SPCh. 3 - Prob. 3.73SPCh. 3 - Prob. 3.74SPCh. 3 - Prob. 3.75SPCh. 3 - Prob. 3.76SPCh. 3 - Prob. 3.77SPCh. 3 - Prob. 3.78SPCh. 3 - Order the following compounds according to their...Ch. 3 - Calculate the energy change in kilojoules per mole...Ch. 3 - Prob. 3.81SPCh. 3 - Prob. 3.82SPCh. 3 - Prob. 3.83SPCh. 3 - Prob. 3.84SPCh. 3 - Prob. 3.85SPCh. 3 - Calculate the overall energy change in kilojoules...Ch. 3 - The estimated lattice energy for CsF2(s) is +2347...Ch. 3 - Prob. 3.88SPCh. 3 - Prob. 3.89SPCh. 3 - Prob. 3.90SPCh. 3 - Prob. 3.91SPCh. 3 - Prob. 3.92SPCh. 3 - Prob. 3.93SPCh. 3 - Prob. 3.94SPCh. 3 - Prob. 3.95SPCh. 3 - Prob. 3.96SPCh. 3 - Prob. 3.97SPCh. 3 - Prob. 3.98SPCh. 3 - Prob. 3.99SPCh. 3 - Prob. 3.100CHPCh. 3 - Prob. 3.101CHPCh. 3 - Prob. 3.102CHPCh. 3 - Prob. 3.103CHPCh. 3 - Prob. 3.104CHPCh. 3 - Prob. 3.105CHPCh. 3 - Prob. 3.106CHPCh. 3 - Prob. 3.107CHPCh. 3 - Prob. 3.108CHPCh. 3 - Prob. 3.109CHPCh. 3 - Prob. 3.110CHPCh. 3 - Prob. 3.111CHPCh. 3 - Prob. 3.112CHPCh. 3 - Prob. 3.113CHPCh. 3 - Prob. 3.114CHPCh. 3 - Given the following information, construct a...Ch. 3 - Given the following information, construct a...Ch. 3 - Consider the electronic structure of the element...Ch. 3 - Prob. 3.118MPCh. 3 - Prob. 3.119MP
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- Calculate the lattice energy of potassium fluoride, KF, using the BornHaber cycle. Use thermodynamic data from Appendix C to obtain the enthalpy changes for each step. (Note: You will obtain a slightly different answer if you use values given in Chapter 8 for the ionization energy and electron affinity, which are energy values at 0 K rather than the enthalpy changes at 298 K.)arrow_forwardArrange the following series of compounds in order of increasing lattice energies. (a) NaBr, NaCl, KBr (b) MgO, CaO, CaCl2 (c) LiF, BeF2, BeOarrow_forward7.107 How do the Lewis symbols for C, Si, and Ge reflect the similarity in their electron configurations?arrow_forward
- Which of the following compounds requires the most energy to convert one mole of the solid into separate ions? (a) MgO (b) SrO (c) KF (d) CsF (e) MgF2arrow_forwardFor which of the following substances is the least energy required to convert one mole of the solid into separate ions? (a) MgO (b) SrO (c) KF (d) CsF (e) MgF2arrow_forwardConsider the reactions of silver metal, Ag(s), with each of the halogens: fluorine, F2(g), chlorine, Cl2(g), and bromine, Br2(l). What chapter data could you use to decide which reaction is most exothermic? Which reaction is that?arrow_forward
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