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Chemistry HL (FE2025)

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Chemistry HL (FE2025)

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What is the enthalpy of formation of ethyne, in kJmol⁻¹, represented by the arrow Y on the diagram?

The standard enthalpy change of formation values of two oxides of phosphorus are:

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What is the enthalpy of formation of ethyne, in kJmol⁻¹, represented by the arrow Y on the diagram?

−788−286+1301

−788−286−1301

+788+286−1301

+788+286+1301

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