The enthalpies of all the elements in their standard states are

Question

The enthalpies of all the elements in their standard states are (A) unity (B) zero (C)  <0  (D) different for each element

Tardigrade Admin · Accepted Answer

The enthalpies of all elements in their standard states are taken as zero. The standard state of an elementary substance means the most stable form of that substance at 298 K temperature and bar pressure.

Q. The enthalpies of all the elements in their standard states are

unity

zero

$< 0$

different for each element

The enthalpies of all elements in their standard states are taken as zero. The standard state of an elementary substance means the most stable form of that substance at 298 K temperature and bar pressure.