Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

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
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?

Similar Discussions: Look for pH
  1. PH in solutions (Replies: 3)

  2. PH problem (Replies: 1)

  3. PH and litmus (Replies: 3)

  4. PH scale (Replies: 1)