Why does HF have a higher boiling point than HCl?
Answer and explanation
Correct answer: C. Hydrogen bonds form between HF molecules
- Step 1: Fluorine is highly electronegative, so HF molecules hydrogen-bond, which needs more energy to break.
Answer
Hydrogen bonds form between HF molecules.
Why not the others: HF has a larger molecular mass: HCl has the larger molecular mass. HF has stronger covalent bonds in the molecule: boiling overcomes intermolecular forces, not covalent bonds. HCl molecules are non-polar: HCl is polar as well.
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