Which of the following haloalkanes is least soluble in water?

Which of the following haloalkanes is least soluble in water?

Correct Answer: Iodoethane

Step 1: Understand what haloalkanes are. Haloalkanes are organic compounds that contain carbon, hydrogen, and halogen atoms (like iodine, bromine, or chlorine).
Step 2: Know that solubility in water depends on the size and polarity of the molecules. Smaller and more polar molecules tend to be more soluble in water.
Step 3: Compare the haloalkanes given in the question. Look at their size and the type of halogen they contain.
Step 4: Identify that iodoethane has iodine, which is larger and less polar than the halogens in other haloalkanes (like chlorine or bromine).
Step 5: Conclude that because iodoethane is larger and less polar, it will be the least soluble in water compared to the others.

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