For example, in the research of the HOR/HER mechanism, the QE assumption is used by Newman who then finds that different Tafel slopes emerge for different rds and can thus be used to distinguish between reaction paths. Similarly, Shinagawa et. al employed the QE assumption in developing microkinetic models for the HOR/HER, arriving again at different "characteristic" Tafel slopes for different reaction mechanisms, which was used by Monteiro et. al. to distinguish the rds for the HOR/HER on gold.