Re: CCOOH & CCOO-

On Mon, 30 May 2005 18:29:55 GMT, "John Doe III"
<john_doeIII@xxxxxxxxx> wrote:

>The boiling point of 3HCCOOH is higher than 3HC2HCOH. I am wondering if the
>boiling point of 3HCCOO- is higher or lower than 3HC2HCOH [3HCCOO-, no
>longer, has the OH group - hydrogen bonding].
>

I will presume you mean acetic acid, ethanol, acetate ion --
respectively.

Ions do not exist -- or boil -- individually. Think about the BP of,
say, sodium acetate. Do you know a general rule of thumb for BP of
ionic compounds as compared to covalent compounds? Do you know why?
(Look up the boiling point of NaCl, and compare it to that of ethanol,
which you mention above. Their formulas masses are similar.)

You are correct that the acetate ion no longer has the OH group; it
now has something capable of much stronger interactions -- a full
ionic charge.


bob

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