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

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.

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