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Energetics 2 Worked examples Ea from graph

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Last updated about 1 year ago
11 questions
Ea from graph
1
1
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Born Haber Cycles and calculations
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3
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Question 1
1.
Gradient = _______ K
Ea = _______ kJmol-1
Question 2
2.
(i) = _______ x 10-3
(ii) = _______
EA = _______
Question 3
3.

Value 1 = _______ x10-3
Value 2 = _______
Gradient = _______
EA = _______ kJ mol-1
Question 4
4.
ionic solid
Other Answer Choices:
Elements in standard states
gaseous ions
Ionic lattice
Question 5
5.
Other Answer Choices:
(dissociation)
Question 6
6.
Other Answer Choices:
Question 7
7.

Born Haber cycle = 𝟏/𝟐 E(F–F) + 732 + 289 + +203 = 348 + 955
1/2 bond Enthalpy (F-F) = _______ kJmol-1
Bond enthalpy = _______ kJmol-1
Question 8
8.
Experimental lattice enthalpy value allows for:
includes_____________ interaction ( non–spherical ions / distorted ions / polarisation)

OR AgF has ______________________ character

Theoretical lattice enthalpy value assumes only __________ interaction
(point charges / no _____________ character / perfect spheres )

OR AgF is not perfectly __________ )
Other Answer Choices:
ionic
covalent
Question 9
9.
Comparing lattice enthalpies
Chloride ion ___________ than fluoride ion

Attraction between Ag+ and Cl – ______________________.
Other Answer Choices:
larger
weaker
Question 10
10.
Enthalpy of hydration calculation
Enthalpy change when __________ of a ____________ ion forms ____________ ions


+77 = +905 – 464 + ∆H(hydration, Cl– )
_____________________
Other Answer Choices:
gaseous
–364 (kJ mol–1 )
1 mol
aqueous
Question 11
11.
Mastered__________