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Homework Help: Finding pH

  1. Oct 21, 2014 #1
    1. The problem statement, all variables and given/known data
    What will the pH be by adding 1M HCL and 1M NaOH to pure water?

    2. Relevant equations
    pH= -log[H+]

    3. The attempt at a solution
    Well, If we form the reaction formula we get
    HCl + NaOH ---> H20 + NaCl

    This is a neutralizing reaction, so the net effect produces just water. Therefore the pH doesn't change. Is this logic right?
  2. jcsd
  3. Oct 21, 2014 #2


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    Staff: Mentor

  4. Oct 21, 2014 #3


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    Staff: Mentor

    Depends on whether you are expected to take ionic strength of the solution into effect, or not. That's typically at least undergraduate level though.
  5. Oct 21, 2014 #4


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    Homework Helper
    Gold Member

    And don't forget the question was: what is the pH?
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