(a) Imagine that a Born-Haber cycle is being constructed by a colleague, to determine the lattice energy of a hypothetical magnesium halide salt, where X is the halide ion. The colleague makes the following list: First and second ionisations of Mg; 737 and 1451 Sublimation energy of Mg; 147 Electron affinity of X; 200 Atomisation enthalpy of X₂; 400 Enthalpy of formation of MgX₂; -450 2+ 2e + Mg(+2X(g) 2+ 2e + Mg() + X₂ (8) + Mg(g) + X₂ (8) a Mg(g) + X₂ (8) 1451 Mg(s) + X₂ (8) 147 MgX2 (s) с 2+ Mg(g) +2X(g) d Sadly the colleague becomes discouraged and leaves the document incomplete, simply drawing boxes around unknown quantities. Complete the calculation by writing down the boxed quantities a-f on your answer paper. You may assume that the units are kJ
(a) Imagine that a Born-Haber cycle is being constructed by a colleague, to determine the lattice energy of a hypothetical magnesium halide salt, where X is the halide ion. The colleague makes the following list: First and second ionisations of Mg; 737 and 1451 Sublimation energy of Mg; 147 Electron affinity of X; 200 Atomisation enthalpy of X₂; 400 Enthalpy of formation of MgX₂; -450 2+ 2e + Mg(+2X(g) 2+ 2e + Mg() + X₂ (8) + Mg(g) + X₂ (8) a Mg(g) + X₂ (8) 1451 Mg(s) + X₂ (8) 147 MgX2 (s) с 2+ Mg(g) +2X(g) d Sadly the colleague becomes discouraged and leaves the document incomplete, simply drawing boxes around unknown quantities. Complete the calculation by writing down the boxed quantities a-f on your answer paper. You may assume that the units are kJ
Principles of Modern Chemistry
8th Edition
ISBN:9781305079113
Author:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Publisher:David W. Oxtoby, H. Pat Gillis, Laurie J. Butler
Chapter3: Atomic Shells And Classical Models Of Chemical Bonding
Section: Chapter Questions
Problem 7P
Related questions
Question
![(a)
Imagine that a Born-Haber cycle is being constructed by a colleague, to
determine the lattice energy of a hypothetical magnesium halide salt,
where X is the halide ion.
The colleague makes the following list:
First and second ionisations of Mg; 737 and 1451
Sublimation energy of Mg; 147
Electron affinity of X; 200
Atomisation enthalpy of X₂; 400
Enthalpy of formation of MgX₂; -450
2+
2e+ Mg(+2X (8)
b
2+
2e + Mg(
+ X2 (8)
a
+ Mg(g) + X₂ (8)
1451
Mg(g) + X₂ (8)
Mg(s) + X2 (8)
f
147
2+
Mg(g) +2X(g)
MgX2 (s)
d
Sadly the colleague becomes discouraged and leaves the document incomplete, simply
drawing boxes around unknown quantities. Complete the calculation by writing down
the boxed quantities a-f on your answer paper. You may assume that the units are kJ
mol-¹.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fd822ff01-59aa-4ff3-b2d0-072270b85647%2F42144021-b798-4ce8-9718-e12e6dd60e34%2Fn7yeb3p_processed.png&w=3840&q=75)
Transcribed Image Text:(a)
Imagine that a Born-Haber cycle is being constructed by a colleague, to
determine the lattice energy of a hypothetical magnesium halide salt,
where X is the halide ion.
The colleague makes the following list:
First and second ionisations of Mg; 737 and 1451
Sublimation energy of Mg; 147
Electron affinity of X; 200
Atomisation enthalpy of X₂; 400
Enthalpy of formation of MgX₂; -450
2+
2e+ Mg(+2X (8)
b
2+
2e + Mg(
+ X2 (8)
a
+ Mg(g) + X₂ (8)
1451
Mg(g) + X₂ (8)
Mg(s) + X2 (8)
f
147
2+
Mg(g) +2X(g)
MgX2 (s)
d
Sadly the colleague becomes discouraged and leaves the document incomplete, simply
drawing boxes around unknown quantities. Complete the calculation by writing down
the boxed quantities a-f on your answer paper. You may assume that the units are kJ
mol-¹.
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