The standard free energy of micellization =RT(1.5 -a)lncmc [R. Zana, Langmuir 12(1996) 1208] where a is the degree of dissociation for CTAB in water having value 0.066 and cmc of 1 mM at temperature 301.15 K. Both salts (NaCl and KCl) have a concentration of 0.01 mol.L-1 . Please tell me my calculation is OK or not.