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15. 4.8g of C(diamond) on complete combination evolves 1584 kJ of heat. The standard heat of formation gaseous carbon is 725kJ/mole. The energy required for the process (1)C(graphite)---->C(gas) (2)C(diamond)--->C(gas) are (A)725, 727 (B)727, 725 (C)725, 723 (D)none of these |
| Answer» 15. 4.8g of C(diamond) on complete combination evolves 1584 kJ of heat. The standard heat of formation gaseous carbon is 725kJ/mole. The energy required for the process (1)C(graphite)---->C(gas) (2)C(diamond)--->C(gas) are (A)725, 727 (B)727, 725 (C)725, 723 (D)none of these | |