The enthalpies of all elements in their standard states are:
(iii) < 0
(iv) different for each element
The enthalpy of all elements in their standard state is zero. Therefore, alternative (ii) is correct.
Is there an error in this question or solution?
Solution The Enthalpies of All Elements in Their Standard States Are: Concept: Enthalpy Change, ∆_rH of a Reaction - Reaction Enthalpy - Standard Enthalpy of Reactions.