Which of the following cannot be used to prepare an emulsion of benzene in water?

CHEMISTRY · Single correct · ISC · Chemistry · Chemical Bonding and Molecular Structure · Bond polarity and dipole moment

Problem

Which of the following cannot be used to prepare an emulsion of benzene in water? (1) SO42−Na+\text{SO}_4^{2-}\text{Na}^+ (2) COO−Na+\text{COO}^-\text{Na}^+ (3) N+(CH3)3Br−\text{N}^+(\text{CH}_3)_3\text{Br}^- (4) (CH3)4N+Br−(\text{CH}_3)_4\text{N}^+\text{Br}^-

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