Tuesday, 7 May 2013

2.12 explain, in terms of dissociation, why hydrogen chloride is acidic in water but not in methylbenzene

Water (H2O) is a polar molecule.
Methylbenzene is a non-polar molecule.
Hydrogen chloride is a polar molecule.

Polars only dissolve in polars.
When hydrogen chloride is dissolved you get +H ions.
These are acidic.
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5 comments:

  1. Anonymous1 April 2015 at 20:49

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  2. Abolade26 January 2016 at 04:19

    Hydrochloric acid dissociates in water due to the latter's polarity....Hydrochloric acid will never dissociate in toluene as the latter is a non polar organic solvent...

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  3. Angus6 April 2016 at 05:35

    H+ ions*

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  4. Unknown3 January 2018 at 01:46

    what does polar mean?

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    Replies
    1. TheLittleLawyer16 May 2018 at 05:19

      The water molecules have a slight charge (delta positive for H and delta negative for oxygen) causing the the positve H plus ions to be attracted to the oxygen in theory and the chlorine to the hydrogen in the water molecule, this is what causes it to dissolve.

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