Formolysis and, in some cases, other solvolysis rates of t4e simple series of secondary p- bromobenzenesulfonates, RCH-(0Bs) CHa and the simple series of primary p- toluenesulfonates, RCHzOTs, with R equal to Me, Et, i-Pr or t-Bu, have been determined in connection with the study of possible driving forces due to participation of carbon or hydrogen in the case of some of the members of the series. While such driving forces in ...