Imperative to evolve thermodynamic characteristic of Rubidium carboxylate (caprylate, caprate and laurate) apparent molar volume insight from density studies have been measured in alkanols. Limiting apparent molar volume and experimental slopes Sv tooaredetermined from Masson equation φv =φv0 + Sv . φv0 has been interpreted in terms of solute-solvent interaction. Ion-solvent interaction and solvent- solvent interaction are quite stronger in alkanols an insight in the structure making or breaking capacity of individual ions.