The enthalpy of atomization of graphite is 698.6 kJ/mol and the mean bond enthalpy of C-C bond in di β Thermodynamics and Thermochemistry Chemistry Question
Question
The enthalpy of atomization of graphite is 698.6 kJ/mol and the mean bond enthalpy of C-C bond in diamond is 348.4 kJ/mol. The enthalpy of conversion of graphite into diamond is
Answer: B
π‘ Solution & Explanation
C(graphite) atomization = +698.6 kJ. C(diamond) atomization = 2*348.4 = 696.8 kJ/mol. Conversion: C(graphite) -> C(diamond); Ξ΄ H = 698.6 - 696.8 = +1.8 kJ/mol.
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