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Look for pH

  1. Dec 4, 2003 #1
    Help me with ph

    pH = -log[H+]

    Express the following concentrations in terms of pH.

    [H+] = 1 * 10^-5 mol/L
    Last edited: Dec 4, 2003
  2. jcsd
  3. Dec 4, 2003 #2
    It's right in front of you. You have the molar concentration for [H+], now just plut it into the equation.

    -log(10^-5) = pH = 5

    Remember: [OH-][H+] = 10^-14

    You will probably need this later on. This is where the lograrithmic pH scale comes from and why it "supposedly" goes from 0-14, although you can have negative pH's with strong enough concentrations.

    Now maybe you can solve my problem in the thread "balance the equation"! heh
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