Chemistry & Chemical Reactivity
9th Edition
ISBN: 9781133949640
Author: John C. Kotz, Paul M. Treichel, John Townsend, David Treichel
Publisher: Cengage Learning
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Question
Chapter 12, Problem 12PS
Interpretation Introduction
Interpretation:
The reason behind the lattice energy of sodium fluoride is more negative than the other sodium halides has to be explained.
Concept introduction:
Lattice formation enthalpy is the enthalpy change when one mole of solid crystal is formed from its scattered gaseous ions.
Expert Solution & Answer
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Students have asked these similar questions
Calculate the lattice enthalpy for RbC1. You will need the following information:
Species AfH°, kJ/mol
Rb(g)
RbCl(s)
Cl(g)
80.9
- 435.4
121.3
Enthalpy of ionization for Rb(g) is 403.0 kJ/mol; electron attachment enthalpy for Cl(g) is −349.0 kJ/mol.
Lattice enthalpy =
kJ/mol
Use the Born-Haber cycle to calculate the lattice energy of NaCl. Be sure your answer has the correct number of significant digits.
Process
Heat of sublimation of Na (s)
1
Energy to dissociate Cl₂ to Cl
2
Electron affinity of Cl
Ionization energy of Na
Standard enthalpy of formation of NaCl
kJ
mol
x10
X
Ś
Energy required
109.
121.4
- 348.6
495.8
- 411.2
kJ
mol
MA, MD, ME, and MG are ionic compounds in which M is a metal. A, D, E, and G are monovalent non-metals of the same Group in the Periodic Table. The order of atomic numbers for these elements is E > D > G > A. With which one of the following, the metal has the most exothermic value of lattice energy?
☐A
☐D
☐E
☐G
☐The value is the same for all.
Chapter 12 Solutions
Chemistry & Chemical Reactivity
Ch. 12.1 - (a) Determining an Atom Radius from Lattice...Ch. 12.1 - Prob. 1RCCh. 12.1 - Prob. 2RCCh. 12.2 - If an ionic solid has an fcc lattice of anions (X)...Ch. 12.2 - Potassium chloride has the same unit cell as NaCl....Ch. 12.2 - 1. The unit cell of silicon carbide. SiC is...Ch. 12.2 - If one edge of the silicon carbide unit cell is...Ch. 12.2 - Prob. 1QCh. 12.2 - Describe the unit cell of lithium (see Figure).Ch. 12.2 - Prob. 3Q
Ch. 12.2 - Prob. 4QCh. 12.3 - Prob. 1RCCh. 12.3 - Prob. 2RCCh. 12.3 - Prob. 3RCCh. 12.4 - Prob. 1RCCh. 12.5 - Prob. 1QCh. 12.5 - Prob. 2QCh. 12.5 - Prob. 3QCh. 12.5 - 1. Which of the following allotropes of carbon is...Ch. 12.5 - Prob. 2RCCh. 12.6 - Prob. 1RCCh. 12.6 - Suppose you wanted to cool 100. g of water from 20...Ch. 12.7 - Prob. 1RCCh. 12.7 - How many tin atoms are contained in the tetragonal...Ch. 12.7 - Prob. 2QCh. 12.7 - Prob. 3QCh. 12.7 - Prob. 4QCh. 12 - Outline a two-dimensional unit cell for the...Ch. 12 - Outline a two-dimensional unit cell for the...Ch. 12 - Prob. 3PSCh. 12 - Rutile, TiO2, crystallizes in a structure...Ch. 12 - Cuprite is a semiconductor. Oxide ions are at the...Ch. 12 - The mineral fluorite, which is composed of calcium...Ch. 12 - Calcium metal crystallizes in a face-centered...Ch. 12 - The density of copper metal is 8.95 g/cm3. If the...Ch. 12 - Potassium iodide has a face-centered cubic unit...Ch. 12 - A unit cell of cesium chloride is illustrated in...Ch. 12 - Predict the trend in lattice energy, from least...Ch. 12 - Prob. 12PSCh. 12 - To melt an ionic solid, energy must be supplied to...Ch. 12 - Which compound in each of the following pairs...Ch. 12 - Prob. 15PSCh. 12 - Prob. 16PSCh. 12 - Considering only the molecular orbitals formed by...Ch. 12 - Prob. 18PSCh. 12 - Prob. 19PSCh. 12 - Prob. 20PSCh. 12 - Prob. 21PSCh. 12 - Prob. 22PSCh. 12 - Prob. 23PSCh. 12 - Prob. 24PSCh. 12 - A diamond unit cell is shown here. Unit cell of...Ch. 12 - The structure of graphite is given in Figure...Ch. 12 - We have identified six types of solids (metallic,...Ch. 12 - Prob. 28PSCh. 12 - Classify each of the following materials as...Ch. 12 - Prob. 30PSCh. 12 - Benzene, C6H6, is an organic liquid that freezes...Ch. 12 - The specific heat capacity of silver is 0.235 J/g ...Ch. 12 - Prob. 33PSCh. 12 - Prob. 34PSCh. 12 - Prob. 35PSCh. 12 - If your air conditioner is more than several years...Ch. 12 - Sketch a phase diagram for O2 from the following...Ch. 12 - Tungsten crystallizes in the unit cell shown here....Ch. 12 - Silver crystallizes in a face-centered cubic unit...Ch. 12 - The unit cell shown here is for calcium carbide....Ch. 12 - The very dense metal iridium has a face-centered...Ch. 12 - Vanadium metal has a density of 6.11 g/cm3....Ch. 12 - Prob. 43GQCh. 12 - Prob. 44GQCh. 12 - Prob. 45GQCh. 12 - Consider the three types of cubic units cells. (a)...Ch. 12 - The solid-state structure of silicon is shown...Ch. 12 - The solid-state structure of silicon carbide is...Ch. 12 - Spinels are solids with the general formula AB2O4...Ch. 12 - Using the thermochemical data below and an...Ch. 12 - Prob. 51GQCh. 12 - Prob. 52GQCh. 12 - Prob. 53GQCh. 12 - Prob. 54GQCh. 12 - Prob. 55GQCh. 12 - Prob. 56GQCh. 12 - Like ZnS, lead(II) sulfide, PbS (commonly called...Ch. 12 - CaTiO3, a perovskite, has the structure below. (a)...Ch. 12 - Potassium bromide has the same lattice structure...Ch. 12 - Calculate the lattice energy of CaCl2 using a...Ch. 12 - Why is it not possible for a salt with the formula...Ch. 12 - Prob. 63SCQCh. 12 - Prob. 64SCQCh. 12 - Prob. 65SCQCh. 12 - Phase diagrams for materials that have allotropes...
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Similar questions
- Use a Born-Haber cycle (Sec. 5-13) to calculate the lattice energy of MgF2 using these thermodynamic data. Compare this lattice energy with that of SrF2, −2496 kJ/mol. Explain the difference in the values in structural terms.arrow_forwardThe answer is not -101938.4 J/molarrow_forwardUse the following data to estimate AH°f for magnesium fluoride. Mg(s) + F₂(g) →→ MgF₂(s) Lattice energy = 2913 kJ/mol First ionization energy of Mg =735 kJ/mol Second ionization energy of Mg= 1445 kJ/mol Electron affinity of F= -328 kJ/mol Bond energy of F₂ =154 kJ/mol Enthalpy of sublimation for Mg =150. kJ/mol Select one or more: 167 kJ/mol -411 kJ/mol -1085 kJ/mol -292 kJarrow_forward
- calculate the lattice energy of NaCl: Na(s)----> Na(g) = 109kj Cl2--->2Cl(g) = 243kj Na(g)----> Na+(g)+ e- = 496kJ Cl(g)+e------>Cl-(g) = -349kJ Na(s) + 1/2Cl2(g)----->NaCl(s) = -411kJarrow_forwardThe 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)arrow_forward9. Use the following data to calculate the lattice energy of Cao. The enthalpy of formation of Cao is –636 kj/mol. The enthalpy of sublimation of Ca is +192 kj/mol, the first ionization energy of Ca is +590 kj/mol, and the second ionization energy of Ca is +1145 kj/mol. The enthalpy of dissociation of 02 is +494 kj/mol of 02 molecules, the first electron affinity of O is -141 kj/mol of 0 atoms, and the second electron affinity of 0 is +845 kj/mol of 0¯ ions.arrow_forward
- Which ionic solid do you expect to have the most negative lattice energy? MgO O CaCl2 O CaS O NaClarrow_forwardOrder these according to increasing lattice energy magnitude, where A is the smallest and C is the largest. VF5, VCl3, and VCl5.arrow_forwardGiven the following thermodynamic data, calculate the lattice energy of LiCl:ΔH°f[LiCl(s)] = -409 kJ/molΔH°sublimation [Li] = 161 kJ/molBond energy [Cl-Cl] = 243 kJ/molIE1 (Li) = 520 kJ/molEA1 (Cl) = -349 kJ/mol -1682 kJ/mol -984 kJ/mol -1560 kJ/mol -862 kJ/mol -1213 kJ/molarrow_forward
- Calculate the amount of heat generated (in kJ) from 0.100 g of hydrogen reacting with 0.600 g of oxygen to form water. 242 kJ of heat is released per one mole of water.arrow_forwardUsing available information, determine the energy change for the formation of the IONIC solid lithium fluoride using lithium and fluorine atoms, i.e. Li(g) + F (g) → LiF(s). IE1(Li) = 500 kJ/mole EA(F) = -300 kJ/mole Lattice energy (LiF) = -1000 kJ/molearrow_forwardEstimate the ionic radius of Cs+. The lattice energy of CsCl is 633 kJ/mol. For CsCl the Madelungconstant, M, is 1.763, and the Born exponent, n, is 10.7. The ionic radius of Cl– is known to be 1.81 Åarrow_forward
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