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Explain why water has high boling and me...

Explain why water has high boling and melting points are compared to `H_(2)S`.

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Water is liquid due to the presence of strong intermolecular hydrogen bonding between `H_(2)O` molecules. Now to change the liquid into gaseous state more energy and hence heating to higher temperature is required. On the other hand, in `H_(2)S` there is no intermolecular hydrogen bonding between `H_(2)S` molecules. the `H_(2)S` molecules are held together by weak dipole-dipole interactions and weak van der walls forces. therefore, small thermal energy is required to cause the boiling to `H_(2)S`. thus water has a high boiling points and high melting points as compared ot `H_(2)S`
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Knowledge Check

  • Water has high boiling point because

    A
    It has high molecules mass
    B
    It has high lattice energy
    C
    It is a weak acid
    D
    Molecules are associated by hydrogen bonding

  • Water has abnormally high boiling point because

    A
    its molecule is bent
    B
    its molecule is linear
    C
    it is associated by hydrogen bonding
    D
    none of the above

  • ________has a very high melting and boiling points

    A
    Diamond
    B
    Fullerene
    C
    Graphite
    D
    Charcoal

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