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The species which by definition has ZERO standard molar enthalpy of formation at 298 K?

The species which by definition has ZERO standard molar enthalpy of formation at 298 K?

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1 Answers

Sunil Kumar FP
askIITians Faculty 183 Points
6 years ago
The standard enthalpy of formation is a measure of the energy released or consumed when one mole of a substance is created under standard conditions from its pure elements
the species should be in free state
The definition of the standard enthalpy of formation is the change in enthalpy when one mole of a substance, in the standard state of 1 atm of pressure and temperature of 298.15 K, is formed from its pure elements under the same conditions.

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