Chapter 17.6, Problem 17.4PP

Which compound ¡n each pair ¡s more water soluble?

a. ${\text{CH}}_{\text{3}}{\left({\text{CH}}_{\text{2}}\right)}_{\text{3}}{\text{CO}}_{\text{2}}{\text{H or CH}}_{\text{3}}{\left(\text{CH2}\right)}_{\text{6}}{\text{CO}}_{\text{2}}\text{H}$

b. ${\text{CH}}_{\text{3}}{\left({\text{CH}}_{\text{2}}\right)}_{\text{6}}{\text{CO}}_{\text{2}}{\text{H or CH}}_{\text{3}}{\left(\text{CH2}\right)}_{\text{6}}{\text{CO}}_{\text{2}}{}^{-}{\text{Li}}^{\text{+}}$

c. ${\text{CH}}_{\text{3}}{\left({\text{CH}}_{\text{2}}\right)}_{\text{3}}{\text{CO}}_{\text{2}}{\text{H or CH}}_{\text{3}}{\text{CO}}_{\text{2}}\text{H}$