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OlgaM077 [116]
1 year ago
11

which reaction is the formation reaction for cao(s) ? in other words, which equation has a δH∘rxn value equal to the δH∘f value

for cao(s) 2ca(s) o2(g)⟶2cao(s) ca(s) 12o2(g)⟶cao(s) cao(s)⟶ca(s) 12o2(g) ca2 (aq) o2−(aq)⟶cao(s) 2cao(s)⟶2ca(s) o2(g)
Chemistry
1 answer:
diamong [38]1 year ago
6 0

The reaction Ca(s)  + 1/2O₂(g) ⇒CaO(s)  in which ΔH⁰rxn value equal to the ΔH⁰f value for cao(s).

In above reaction

calcium and oxygen react to form calcium oxide. In this reaction one mole of calcium oxide solid formed so the enthalpy change during this is reaction is considered as enthalpy of formation.

The enthalpy change that takes place when 1 mole of a substance is created from its component elements in their standard states is known as the standard enthalpy of formation.

Hence, one mole of cao is formed from a constituent atom from their elemental state is the enthalpy of formation.

To know more about Enthalpy of formation.

brainly.com/question/28302300

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