( ( ( the ( standard enthalpy ) ) ( of reaction ) ) ( ( will ( be ( positive ( for ( an ( endothermic reaction ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT the) (JJ standard) (NN enthalpy)) (PP (IN of) (NP (NN reaction)))) (VP (MD will) (VP (VB be) (ADJP (JJ positive) (PP (IN for) (NP (DT an) (JJ endothermic) (NN reaction)))))) (. .)))
the standard enthalpy of reaction will be positive for an endothermic reaction.
(ROOT (S (S (VP (VBZ Is) (NP (NP (DT the) (NN heat)) (PP (IN of) (NP (NP (NN reaction)) (PP (IN for) (NP (DT an) (JJ endothermic) (NN reaction)))))))) (VP (VBZ is) (ADJP (JJ positive))) (. .)))