Question

The principal reason for the extremely low solubility of nacl in benzene (c6h6) is the __________.

a. increased disorder due to mixing of solute and solvent
b. hydrogen bonding in c6h6
c. strength of the covalent bond in nacl
d. strong solvent-solvent interactions
e. weak solvation of na+ and cl- by c6h6

Answer 1

The principal reason for the extremely low solubility of NaCl in benzene (C₆H₆) is the: e. weak solvation of Na⁺ and Cl⁻ by C₆H₆.
Solvation is the interaction of solvent (benzene) with molecules or ions (sodium chloride) in a solute. Sodium chloride has ionic bonds and benzene has nonpolar covalent bonds, because of that, solvation is weak.