A) Strength of an \[O-H\] bond in \[{{H}_{2}}O\]
B) Heat evolved when one mole of \[{{H}_{2}}O\] is formed from its elements
C) Enthalpy changed by vaporisation of water
D) The melting point of ice.
Correct Answer: C
Solution :
Water forms a hydrogen bonding in its molecule. Due to H-bonding the electrostatic force of attraction in the molecules become large. Hence, its boiling point is high because large energy is required to separate these molecules. Hence enthalpy changed value of vaporisation of water could be used to estimate the strength of a H-bond in water.
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