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March 25, 2017

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Depict the hydrogen bonding between two ammonia molecules and between one ammonia molecule and one water molecule?

  • Chemistry - ,

    Well I am supposed to depict the hydrogen bonding between two ammonia molecules in structural formula, and the one ammonia molecule and water molecule in structural formula.

    Isn't ammonia NH subscript 3 ?

  • Chemistry - ,

    Yes, ammonia is NH3 and water is H2O. We can't draw structures on these boards. However, for H bonding between ammonia molecules, the N of one molecule has the usual
       ..
    H-N-H
       |
       H
    (I hope that looks ok).
    To show H bonding between NH3 molecules, you draw a dashed line between the N of one NH3 molecule and the H of another NH3 molecule. That is H bonding between NH3 molecules. Of course, you can make a chain of those types of bonds if you wish. Then to show H bonding between NH3 and H2O, you draw a dashed line between the H of an NH3 molecule to the O of the H2O molecule but there is no reason to believe that H from H2O and N from NH3 couldn't bond the same way (except you realize O is the more electronegative atom; therefore, the O will attract additional H atoms more so that N will).

  • Chemistry - ,

    okay thanks I think I understand it now

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