The energy of the carbide released is 7262.5MJ.
We know that the reaction between calcium oxide and carbon occurs in accordance with the reaction; [tex]CaO(s)+3C(s)----- > CaC2(s)+CO(g)[/tex]. The reaction is seen to produce 464.8kJ of energy per mole of carbide produced.
Number of moles of CaC2 produced = 1000 * 10^3 g/64 g/mol
= 15625 moles of calcium carbide
If 1 mole of CaC2 transfers 464.8 * 10^3 J
15625 moles of calcium carbide transfers 15625 moles * 464.8 * 10^3 J/ 1 mol
= 7262.5MJ
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