Question

Calculate the lattice energy of BaO given that M=1.74756 and that the Ba-Cl distance is 275 pm.

Answer #1

Place the following in order of increasing magnitude of lattice
energy.
MgO
NaI
Ba S

Calculate the lattice energy for NaF (s) given the following
sublimation of energy +109 kj/mol
Hf for F (g) + 77 kj/mol
first ionization energy of Na (g) +495
electron affinity of F(g) -328
enthalpy of formation of NaF(s) -570 kj/mol
A. -177
B. 192
C. -804
D. -1047
E. -923

Estimate the electric field in between neighboring Na+ and Cl-
ions in table salt given the distance between the centers of the
ions is 282 pm. (neglect fields of all but two ions and calculate
it in the middle between the ions).

calculate the lattice energy of CsCl using a Born-Haber
cycle.

Calculate the p-value for each of the ions in the following:
A. Na+, Cl-, and OH- in a solution that is 0.0635M in NaCL and
0.0403 M in NaOH.
B. Ba^2+, Mn^2+, and Cl^- in a solution that is 4.65* 10^-3M
in BaCl2 and 2.54 M in MnCl2.

Construct a Born-Haber cycle to calculate the lattice energy of
MgCl2.
The CRC Handbook of Chemistry and Physics lists the
MgCl2 lattice energy as 2540 kJ mol-1. How does your answer compare
to the literature value?

Calculate the molar solubility of Ba(IO3)2 in a solution that is
also 0.0600 M in Ba(NO3)2. (Ksp (Ba(IO3)2) = 1.57 x 10-9 )

Use the Born-Haber Cycle to calculate the lattice energy of an
ionic solid which includes a polyatomic ion.

Draw the Born-Haber cycle for the formation of CaH2, and
calculate the value for lattice energy? (You will have to look up
the required thermodynamic data)

Given the following information:
Energy of sublimation of K(s) = 77 kJ/mol
Bond energy of HCl = 427 kJ/mol
Ionization energy of K(g) = 419 kJ/mol
Electron affinity of Cl(g) = –349 kJ/mol
Lattice energy of KCl(s) = –705 kJ/mol
Bond energy of H2 = 432 kJ/mol
Calculate the net change in energy for the following
reaction:
2K(s) + 2HCl(g) → 2KCl(s) +
H2(g)
ΔE = ______ kJ

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