When trinitrotoluene (TNT) detonates according to the reaction 2 C7H5N306(s) → 3 N2(g) + 5 H2(g) + 12 CO(g) + 2 C(s), the enthalpy change at 25°C and 1 atm is –1,475 kJ while the volume increases by about 247 L. What is the internal energy change (assume only P-V work is done)? A. +986 kJ O B. –1,964 kJ O C.-1,450 kJ D.-1,525 kJ O E. –1,500 kJ

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When trinitrotoluene (TNT) detonates according to the reaction
2 C7H5N306(s) → 3 N2(g) + 5 H2(g) + 12 CO(g) + 2 C(s),
the enthalpy change at 25°C and 1 atm is –1,475 kJ while the volume increases by about 247 L. What
is the internal energy change (assume only P-V work is done)?
A. +986 kJ
O B. –1,964 kJ
O C.-1,450 kJ
D.-1,525 kJ
O E. –1,500 kJ
Transcribed Image Text:When trinitrotoluene (TNT) detonates according to the reaction 2 C7H5N306(s) → 3 N2(g) + 5 H2(g) + 12 CO(g) + 2 C(s), the enthalpy change at 25°C and 1 atm is –1,475 kJ while the volume increases by about 247 L. What is the internal energy change (assume only P-V work is done)? A. +986 kJ O B. –1,964 kJ O C.-1,450 kJ D.-1,525 kJ O E. –1,500 kJ
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