Homework Answers
The formation of KCl from its constituent element in their standard element is an exothermic process as energy is evolved during KCl formation.
In the other all processes given, amount of energy is required. So, not exothermic instead endothermic.
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Which of the following processes is exothermic? the second ionization energy of Mg the sublimation of...
which of the following process is exothermic? Which of the following processes is exothermic? the sublimation of K...
which of the following process is exothermic?
Which of the following processes is exothermic? the sublimation of K the second ionization energy of Sr the formation of NaF from its constituent elements in their standard state the breaking the bond of Br2 None of the above is exothermic
Which of the following processes are exothermic?the formation of NaBr from its constituent elements in their...
Which of the following processes are exothermic?the formation of NaBr from its constituent elements in their standard statethe breaking the bond of I2the sublimation of Lithe second ionization energy of MgNone of the above are exothermic
The change in energy for which of the following processes represents the second ionization energy of...
The change in energy for which of the following processes represents the second ionization energy of sodium? A) Na+(g) –––> Na2+(g) + e– B) Na(g) + e– ––––> Na–(g) C) Na–(g) + e– –––> Na2–(g) D) Na(g) –––––> Na+(g) + e– E) Na–(g) ––––> Na+(g) + 2 e–
Select which process describes the following energy changes. (Ionization energy, electron affinity, bond enthalpy, or standard...
Select which process describes the following energy changes. (Ionization energy, electron affinity, bond enthalpy, or standard enthalpy of formation A. F(g) + e- => F-(g) B. F2(g) => 2F(g) C. Na(g) => Na+(g) + e- D. Na(s) + 1/2F2(g) => NaF(g)
Which of the following atoms would have the largest second ionization energy? Mg Cl Na Ca...
Which of the following atoms would have the largest second ionization energy? Mg Cl Na Ca S Which of the following electron configurations is different from that expected? Cr Ca Ti V Sc
7.90 Rank the following elements in order of increasing ionization energy: Mg, P. O. 7.91 Use...
7.90 Rank the following elements in order of increasing ionization energy: Mg, P. O. 7.91 Use electron configurations to explain why more energy is required to remove an electron from a lithium atom than from a sodium atom. 7.93 Use electron configurations to explain why the ionization energy for fluorine is greater than that for oxygen. 7.95 Write balanced equations that represent the processes that correspond to the first and second ionization energies for magnesium. 7.96 Which ionization energy (IE....
Calculate the enthalpies of formation, ΔHfo, of the following group 1 fluoride compounds from their elements...
Calculate the enthalpies of formation, ΔHfo, of the following
group 1 fluoride compounds from their elements using the Born–Haber
cycle.
NaF RbF Number Number kJ ol kJ mol AHO, kJ/mol Sublimation of Na(s) 108 86 Sublimation of Rb(s) 158 Dissociation of F2(g Ionization energy of Na(g) 496 ionization energy of Rb(g) 403 Electron affinity of F(g) -322 Lattice enthalpy of NaF(s) 926 Lattice enthalpy of RbF(s) 789
Which of the statements listed below is false? a) The third ionization energy of Al is...
Which of the statements listed below is false? a) The third ionization energy of Al is greater than the third ionization energy of Mg. b) The second ionization energy of Na is greater than the second ionization energy of Mg. c) The first ionization energy of Be is greater than the first ionization energy of Li. d) The first ionization energy of Li is greater than the first ionization energy of Na. e) The fourth ionization energy of C is...
Given the following information, calculate the lattice energy of CaF2 The enthalpy of formation of CaF2...
Given the following information, calculate the lattice energy of CaF2 The enthalpy of formation of CaF2 -1228 kJ/mol Heat of sublimation of Ca 177.8 kJ/mol Bond dissociation energy of F2 159 kJ/mol First ionization energy of Ca 589.8 kJ/mol Second ionization energy of Ca 1145.4 kJ/mol . Electron affinity of F -328 kJ/mot [ Answer : -2644 KJİ I
Consider the following information. • The lattice energy of KCl is AHlattice = -701 kJ/mol. •...
Consider the following information. • The lattice energy of KCl is AHlattice = -701 kJ/mol. • The enthalpy of sublimation of K is AHsub = 89.0 kJ/mol. • The first ionization energy of K is IE1 = 419 kJ/mol. • The electron affinity of Cl is AHEA = -349 kJ/mol. • The bond energy of Cl, is BE = 243 kJ/mol. Determine the enthalpy of formation, AHf, for KCl(s). AHư= kJ/mol
which of the following process is exothermic?
Which of the following processes is exothermic? the sublimation of K the second ionization energy of Sr the formation of NaF from its constituent elements in their standard state the breaking the bond of Br2 None of the above is exothermic
7.90 Rank the following elements in order of increasing ionization energy: Mg, P. O. 7.91 Use electron configurations to explain why more energy is required to remove an electron from a lithium atom than from a sodium atom. 7.93 Use electron configurations to explain why the ionization energy for fluorine is greater than that for oxygen. 7.95 Write balanced equations that represent the processes that correspond to the first and second ionization energies for magnesium. 7.96 Which ionization energy (IE....
Calculate the enthalpies of formation, ΔHfo, of the following
group 1 fluoride compounds from their elements using the Born–Haber
cycle.
NaF RbF Number Number kJ ol kJ mol AHO, kJ/mol Sublimation of Na(s) 108 86 Sublimation of Rb(s) 158 Dissociation of F2(g Ionization energy of Na(g) 496 ionization energy of Rb(g) 403 Electron affinity of F(g) -322 Lattice enthalpy of NaF(s) 926 Lattice enthalpy of RbF(s) 789
Which of the statements listed below is false? a) The third ionization energy of Al is greater than the third ionization energy of Mg. b) The second ionization energy of Na is greater than the second ionization energy of Mg. c) The first ionization energy of Be is greater than the first ionization energy of Li. d) The first ionization energy of Li is greater than the first ionization energy of Na. e) The fourth ionization energy of C is...
Given the following information, calculate the lattice energy of CaF2 The enthalpy of formation of CaF2 -1228 kJ/mol Heat of sublimation of Ca 177.8 kJ/mol Bond dissociation energy of F2 159 kJ/mol First ionization energy of Ca 589.8 kJ/mol Second ionization energy of Ca 1145.4 kJ/mol . Electron affinity of F -328 kJ/mot [ Answer : -2644 KJİ I
Consider the following information. • The lattice energy of KCl is AHlattice = -701 kJ/mol. • The enthalpy of sublimation of K is AHsub = 89.0 kJ/mol. • The first ionization energy of K is IE1 = 419 kJ/mol. • The electron affinity of Cl is AHEA = -349 kJ/mol. • The bond energy of Cl, is BE = 243 kJ/mol. Determine the enthalpy of formation, AHf, for KCl(s). AHư= kJ/mol
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