Water has a higher boiling point than hydrogen fluoride because it can participa
ID: 695885 • Letter: W
Question
Water has a higher boiling point than hydrogen fluoride because it can participate in more hydrogen bonding. What is the maximum number of hydrogen bonds in which a water molecule could theoretically participate?
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QUESTION 2
What statement best describes London (also called dispersion) forces?
They are only present in non-polar substances.
They are the most important type of intermolecular force in water.
They are present in every substance, but often become irrelevant in very polar materials.
They are only present in atoms such as Helium or Argon.
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Explanation / Answer
(1)
Since water molecule has 2 hydrogen atoms, and one O atom which has 2 lone pairs, so effectively a water molecule can form 4 hydrogen bonds at maximum.
(2)
Since London dispersion forces are very weak, and are due to the attractive forces between atoms, so the correct answer is:
They are present in every substance, but often become irrelevant in very polar materials.
Hope this helps !
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