The heat of fusion of aluminum at its normal
melting point of 660°C is 10.8
kJ/mol, while its heat of vaporization at its normal boiling point
of 2467°C is 284.1 kJ/mol.
(a) Use these data to calculate the heat of sublimation for
Al. kJ/mol
Is your answer precise or is it approximate?
_________preciseapproximate
(b) At 298 K, the standard heat of formation of
Al(s) is 0
kJ/mol while the standard heat of formation of
Al(g) is 330.0kJ/mol. Use this to
calculate the heat of sublimation of aluminum.
kJ/mol.
Is your result for part (b) larger or smaller than the value
calculated in part (a)? _________largersmaller
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The heat of fusion of aluminum at its normal melting point of 660°C is 10.8 kJ/mol,...