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Homework Help: PH question

  1. May 19, 2009 #1
    hey guys, ive just started PH, just wondering if you could show me how to do this question. thanks for any help

    What is the pH of a solution made by mixing 800 mL of 0.01 M HNO3 and 700.75 mL of water?
  2. jcsd
  3. May 20, 2009 #2


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    Homework Helper
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    Gold Member

    Nitric acid is a strong acid - what does this mean?
    pH means "negative logarithm of the hydrogen ion concentration in Molarity", at least for practical purposes - Did you yet calculate the hydrogen ion concentration in your given solution?

    note: the logarithm is in 'base ten'
    Last edited: May 20, 2009
  4. May 21, 2009 #3
    does that mean it dissociates completely?
  5. May 21, 2009 #4


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    Staff: Mentor

    Yes, you may safely assume it is completely dissociated.
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