Crown ethers can make salts that are insoluble in nonpolar solvents soluble and in so doing the crown ether acts as a phase-transfer catalyst (the 2 phases are the polar solvent and the nonpolar solvent.) A crown ether creates what is known as a crown-guest complex and has the ability to be size selective when it comes to the guest. This is an example of molecular recognition. Select the statement that is true. a) The “guest” is 1the cation of the salt both the cation and anion of the salt b) Write the letter of the crown ether needed to make the given salt soluble in benzene (use each once.) Salt 2 potassium acetate 3 lithium fluoride 4 sodium fluoride
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