The enthalpies of the elements in their standard states are... | CHEMISTRY - ENTHALPY CHANGE,Δ, H OF A REACTION | SolveeIt | Solveeit

Today, August 18

Question

The enthalpies of the elements in their standard states are assumed to be.

A

Zero at 298 K

B

Unit at 298 K

C

Zero at all temperatures

D

Zero at 273 K

Answer

Zero at 298 K

Explanation

Solution

The enthalpies of all elements in their standard state at $7.4cald ⥂ eg^{- 1}$ or 298K are zero.