Re: electrochemistry, help!

On Feb 26, 8:45 pm, "katherine.schre...@xxxxxxxxx"
<katherine.schre...@xxxxxxxxx> wrote:
I am really beginning to hate electrochemistry, I just don't get it.
Here is my question:

A pH electrode was used to determine the fluoride concentration of an
unknown sample....why wouldn't a fluoride ion selective electrode have
been used???? How does a pH electrode measure the concentration of
fluoride?


Consider this reaction:

F- + H2O <---> HF + OH-

Dangerous Bill
(of course, any sensible person would use a fluoride electrode, but
this is a homework problem, right?
Don't hate electrochemistry or your nerves will stop working.)


.

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