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Chemistry-PH Scale Limitations

  • 28-05-2010 10:46am
    #1
    lc2010
    Registered Users, Registered Users 2 Posts: 241 ✭✭


    What are the limitations to the PH scale??


Comments

  • #2
    irish-anabel
    Closed Accounts Posts: 118 ✭✭irish-anabel


    One of them is that it doesn't indicate how concentrated in acid or base the substance is, it only gives its tendancy to donate or accept electrons. The other might be that it doesn't work for very very strong acids or bases. I'm pretty sure it's in the book though, haven't got it beside me.


  • #3
    lc2010
    Registered Users, Registered Users 2 Posts: 241 ✭✭lc2010


    irish-anabel wrote: »
    One of them is that it doesn't indicate how concentrated in acid or base the substance is, it only gives its tendancy to donate or accept electrons. The other might be that it doesn't work for very very strong acids or bases. I'm pretty sure it's in the book though, haven't got it beside me.

    Thanks! Yeah I can't find it in the book but thats not to say it isn't there.
    I know one is that it doesn't really work above 25C but I had forgotten this one.


  • #4
    leg
    Registered Users, Registered Users 2 Posts: 189 ✭✭leg


    1- cannot measure very strong acids and bases
    2- its temperature dependant
    3-sample to be tested must be in solution so solids cannot be measured

    off the top of my head thats them


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