( It ( ( represents ( ( the magnitude ) ( of ( ( ( the ( driving force ) ) ( for ( the electrons ) ) ) ( to ( ( move ( from ( ( one half-reaction ) ( ( ( ( to ( the other ) ) , ) or ) ( for ( the ( cell ( redox reaction ) ) ) ) ) ) ) ) ( to ( occur ( in ( a ( thermodynamically ( spontaneous manner ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP It)) (VP (VBZ represents) (NP (NP (DT the) (NN magnitude)) (PP (IN of) (NP (NP (DT the) (VBG driving) (NN force)) (PP (IN for) (NP (DT the) (NNS electrons))) (S (VP (TO to) (VP (VB move) (PP (IN from) (NP (NP (CD one) (NN half-reaction)) (PP (PP (TO to) (NP (DT the) (JJ other))) (, ,) (CC or) (PP (IN for) (NP (DT the) (NN cell) (NN redox) (NN reaction)))))) (S (VP (TO to) (VP (VB occur) (PP (IN in) (NP (DT a) (JJ thermodynamically) (JJ spontaneous) (NN manner))))))))))))) (. .)))
It represents the magnitude of the driving force for the electrons to move from one half-reaction to the other, or for the cell redox reaction to occur in a thermodynamically spontaneous manner.
(ROOT (S (NP (DT A) (JJ voltaic) (NN cell)) (VP (VBZ generates) (NP (DT an) (JJ electric) (NN current)) (PP (IN through) (NP (NP (DT a) (NN reaction)) (VP (VBN known) (PP (IN as) (NP (DT a) (PRN (-LRB- -LRB-) (NP (NN n)) (-RRB- -RRB-)) (JJ spontaneous) (NN redox))))))) (. .)))