Anonymous1502
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Question above^
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Anonymouspsych
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(Original post by Anonymous1502)
Question above^
Hexane is non polar whereas water is polar. So the hexane molecules don't form hydrogen bonds with the water molecules.
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Anonymous1502
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(Original post by Anonymouspsych)
Hexane is non polar whereas water is polar. So the hexane molecules don't form hydrogen bonds with the water molecules.
Why does it not form hydrogen bonds with the oxygen?
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Anonymouspsych
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(Original post by Anonymous1502)
Why does it not form hydrogen bonds with the oxygen?
Because hexane only consists of carbon and hydrogen atoms and only has C-C and C-H bonds. Carbon and hydrogen have similar electronegativities and hence the C-H bond is pretty much non polar (the electronegativity difference is too small so the electron density is shared out quite evenly). This means the hydrogen atoms on the C-H bonds in the hexane molecule are not polarised enough and don't have a strong enough δ+ charge to form hydrogen bonds with the lone pair of electrons on the oxygen atoms in water molecules.
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Plantagenet Crown
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(Original post by Anonymous1502)
Why does it not form hydrogen bonds with the oxygen?
Hydrogen bonds can only occur when a H is bonded to an O, N or F. Hexane hydrogens are only bonded to carbons.
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xdopaminex
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It's a simple question with a simple answer. Hexane is a non-polar molecule and water is polar molecule (Like dissolves like). Hexane is a neutral molecule because of its symmetry. When I say symmetrical, what I mean is that the electro-negativities of the hydrogen atoms have all cancelled out with each other. Also, every carbon atoms are singly-bonded to other 4 atoms and so their orbitals are completely filled (sp3 hybrid), the same goes for the hydrogen orbitals. In summary, there are no extra electrons in the hexane molecule and it is symmetrical which is why it is insoluble.
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niv1234
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It has strong non-polar C-H and C-C bonds.
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