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Haloalkanes and Haloarenes — Chemistry STD 12 Science — Question

Gujarat BoardEnglish MediumSTD 12 ScienceChemistryHaloalkanes and Haloarenes2 Marks
Question
Explain solubility of haloalkane.
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Answer

→ The haloalkanes are slightly soluble in water.
→ In order to dissolve haloalkane in water, energy is required to overcome the attractions between the haloalkane molecules and break the hydrogen bonds between water molecules.
→ Less energy is released when new attractions are set up between the haloalkane and the water molecules as these are not as strong as the original hydrogen bonds in water.
→ As a result, the solubility of haloalkanes in water is low.
→ However, haloalkanes tend to dissolve in organic solvents because the new intermolecular attractions between haloalkanes and solvent molecules have the same strength as the ones being broken in separate haloalkane and solvent molecules.

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