1.

For the irreversible reaction, Ca+ 2C = Ca C₂ , Δ H°298 = - 60000 J . mole⁻¹ . If a system initially containing 2 moles of calcium, 3 moles of carbon and 1 mole of calcium carbide is allowed to react to completion, the heat evolved at 298 K will be#

A. 30000 J
B. 60000 J
C. 90000 J
D. 240000 J
Answer» D. 240000 J


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