1.

Statement I : Water is a high boiling point liquid. Statement II : Hydrogen bonding in water is responsible for high boiling point of water .

Answer»

Both the statements individually true and Statement II is the correct explanation of Statement I.
Both the statements are individually true but Statement II is not correct explanation of Statement I.
Statement I is true but Statement II is false .
Statement I is false but Statement II is true .

Solution :In the case of water, hydrogen bonding , which is a special case of polar dipole forces exerts a very strong effect to KEEP the molecules in a liquid state unit a fairly HIGH temperature is REACHED . Water boils at +100 C , which is very abnormal . The major reason for this abnormal behavior is the strong attractions afforded by the hydrogen bonds . It TAKES a lot more kinetic energy in an INCREASED temperature to break the hydrogen bonds to free the water molecules as the gas.


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