( This ( ( can ( ( lead ( to ( ( a decrease ) ( in ( the ( reaction rate ) ) ) ) ) ) ( if ( ( the ( rate-determining step ) ) ( involves ( breaking ( ( a bond ) ( between ( ( hydrogen and ) ( another atom ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT This)) (VP (MD can) (VP (VB lead) (PP (TO to) (NP (NP (DT a) (NN decrease)) (PP (IN in) (NP (DT the) (NN reaction) (NN rate))))) (SBAR (IN if) (S (NP (DT the) (JJ rate-determining) (NN step)) (VP (VBZ involves) (S (VP (VBG breaking) (NP (NP (DT a) (NN bond)) (PP (IN between) (NP (NP (NN hydrogen)) (CC and) (NP (DT another) (NN atom)))))))))))) (. .)))
This can lead to a decrease in the reaction rate if the rate-determining step involves breaking a bond between hydrogen and another atom.
(ROOT (S (NP (JJ Catabolic) (NNS reactions)) (VP (VBP involve) (S (VP (VBG breaking) (NP (NNS bonds))))) (. .)))