Crown ethers solubilize ionic compounds by creating a hydrophilic binding pocket that fits a metal cation with a hydrophobic outside. Say you wanted to dissolve each of the following ionic compounds in benzene - you'd have to add the appropriate crown ether. Match each compound with the appropriate crown ether.
LICI
NaF
Br
CKF
A. 12-crown-4
B. 18-crown-6
C.21-crown-7
D. 9-crown-3
E. 15-crown-5
F. 6-crown-2
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