Question

What it the value of ∆G°f for an element in its standard state?​

Answer 1

Answer:

The standard enthalpy of formation is defined as the change in enthalpy when one mole of a substance in the standard state (1 atm of pressure and 298.15 K) is formed from its pure elements under the same conditions.

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Introduction.

Compound ΔHfo

H2(g) 0 kJ/mol

H2O(g) -241.8 kJ/mol

HF(g) -271.1 kJ/mol

NO(g) 90.25 kJ/mol