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Olympiad workbook

Exam: Olympiad workbook
Subject: NSEC
Chapter: Thermodynamics (C)

Olympiad workbook · NSEC · Thermodynamics (C)

At 298 K , change in internal energy for the complete combustion of...

At 298 K , change in internal energy for the complete combustion of fullerene,

\mathrm{C}_{60}(\mathrm{~s})

, an allotrope of carbon, and the enthalpy of formation of

\mathrm{CO}_2(\mathrm{~g})

are

-25970 \mathrm{~kJ} \mathrm{~mol}^{-1}

and

-393 \mathrm{~kJ} \mathrm{~mol}^{-1}

respectively. The enthalpy of formation of

\mathrm{C}_{60}(\mathrm{~s})

at 298 K is

Options

A $-2390 \mathrm{~kJ}$
B $4.95 \times 10^4 \mathrm{~kJ}$
C $2.60 \times 10^4 \mathrm{~kJ}$
D2390 kJ

Correct answer

D. 2390 kJ

Step-by-step solution

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