▁accompan ies ▁the ▁formation ▁of ▁ 1 ▁mole ▁of ▁a ▁subst ance ▁in ▁its ▁standard ▁state ▁from ▁its ▁constitu ent ▁elements ▁in ▁their ▁standard ▁states ▁( the ▁most ▁stable ▁form ▁of ▁the ▁element ▁at ▁ 1 ▁bar ▁of ▁pressure ▁and ▁the ▁specified ▁temperature , ▁usually ▁ 2 9 8 . 1 5   K ▁or ▁ 2 5   ° C ). ▁ ▁The ▁table ▁below ▁lists ▁the ▁standard ▁Gib bs ▁function ▁of ▁formation ▁for ▁several ▁elements ▁and ▁chemical ▁comp ounds ▁and ▁is ▁taken ▁from ▁L ange ' s ▁Hand book ▁of ▁Chem istry . ▁Note ▁that ▁all ▁values ▁are ▁in ▁k J / m ol . ▁ ▁Far ▁more ▁extensive ▁tables ▁can ▁be ▁found ▁in ▁the ▁C RC ▁Hand book ▁of ▁Chem istry ▁and ▁Physics ▁and ▁the ▁N IST ▁J AN AF ▁tables . ▁ ▁The ▁N IST ▁Chem istry ▁Web Book ▁( see ▁link ▁below ) ▁is ▁an ▁online ▁resource ▁that ▁contains ▁standard ▁ent hal py ▁of ▁formation ▁for ▁various ▁comp ounds ▁along ▁with ▁the ▁standard ▁absolute ▁entropy ▁for ▁these ▁comp ounds ▁from ▁which ▁the ▁standard ▁Gib bs ▁free ▁energy ▁of ▁formation ▁can ▁be ▁calculated . ▁ ▁See ▁also ▁Th erm och em istry ▁Cal or imet ry ▁ ▁References ▁ ▁External ▁links ▁N IST ▁Chem istry ▁Web Book ▁ ▁Category : Th erm od ynamic ▁free ▁energy <0x0A> </s> ▁Gor ley ▁Lyn ch ▁is ▁a ▁ham let ▁in ▁the ▁civil ▁parish ▁of ▁Gor ley ▁in ▁the ▁New ▁Forest ▁National ▁Park ▁of ▁Ham pshire , ▁England . ▁It ▁is ▁in ▁the