Interactions of Mono-, Di- and Trialkylammonium Ions in Solution from Partial Molal Volume Study

Central Electrochemical Research Institute, Karaikudi 623 006, Tamil Nadu, India

Manuscript received 20 July 1978, revised 24 January 1979, accepted 12 March 1979

Partial molal volume data of mono-, di-, and trialkylammonium (R_xNH${}_4^{+}-x$) ions have been used to examine their hydrophobic behaviours in aqueous solution. The semiempirical equation, proposed earlier for studying hydrophobic interactions of tetra­alkylammonium (R₄N⁺) ions, appears to hold well also for R_xNH${}_4^{+}-x$  ions in solution.