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Which of these structures has hydrogen bonding? Water (H2O), ethyl alcohol (CH3CH2OH), and hexane (C6H14).

Answer 1

Water and ethyl alcohol have H-bonding.

A hydrogen bond is the electromagnetic attractive interaction between polar molecules, in which hydrogen (H) is bound to a highly electronegative atom, such as nitrogen (N), oxygen (O) or fluorine (F).

These hydrogen-bond attractions can occur between molecules (intermolecular) or within different parts of a single molecule (intramolecular). The hydrogen bond (5 to 30 kJ/mole) is stronger than a van der Waals interaction, but weaker than covalent or ionic bonds.

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Answer 2

Axel Alvarado

H2O, or water, demonstrates hydrogen bonding.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.