How much heat in kilojoules is evolved or absorbed in the reaction of 292.5 g of...

How much heat in kilojoules is evolved or absorbed in the reaction of 292.5 g of calcium oxide with enough carbon to produce calcium carbide? CaO(s)+3C(s)→CaC2(s)+CO(g) ΔH∘ = 464.6kJ

Solutions

Expert Solution

moles of CaO = 292.5 / 56 = 5.22

CaO(s) + 3C(s) --------------------> CaC2(s) + CO(g) ΔH∘ = 464.6kJ

1 3 1 1

5.22

1 mol of CaO gives ------------------> ΔH∘ = 464.6kJ

5.22 mol of CaO ------------------ > ??

heat absorbed = 5.22 x 464.6 / 1

= 2425.2 kJ

heat in kilojoules absorbed = 2425.2 kJ

queen_honey_blossom answered 1 year ago

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