Which of the following is/are true when NaCl is dissolved in Dimethyl sulfoxide (DMSO)?
A
Na+remains unsolvated.
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B
Cl−remains unsolvated.
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C
Cl− is solvated by the solvent.
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D
Both (a) and (b)
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Solution
The correct option is BCl−remains unsolvated. Nucleophilicity in polar aprotic solvents like DMSO, acetone etc: Na+ is solvated as shown, but halide i.e. Cl− ion cannot be solvated because the partial positive charge of sulphur is hindered by the methyl groups. So, it remains unsolvated.