1. Not finding help here? Sign up for a free 30min tutor trial with Chegg Tutors
    Dismiss Notice
Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

PH of a mixed solution: is this right?

  1. Dec 15, 2006 #1
    1. The problem statement, all variables and given/known data

    What is the final pH of a solution obtained by mixing 200 ml of 0.400 M NH3 with 300 ml of 0.100 M HCl? (Kb = 1.8 x 10^-5)

    2. Relevant equations

    3. The attempt at a solution

    I used an ICE table and came up with 9.68. Is that correct?

    Should I have used two ICE tables instead of one? The first in the one direction and the second going back in the other direction?
     
    Last edited: Dec 15, 2006
  2. jcsd
  3. Dec 16, 2006 #2

    GCT

    User Avatar
    Science Advisor
    Homework Helper

    hint: the first reactions is that with NH3 and HCl, if you have excess HCl, then you can simply use the pH equation (pH= -log[H3O+]) to find the resulting pH, if the base is the excess, then the Kb equation is going to be used to determine the [OH-] concentration, and eventually the pH.
     
  4. Dec 16, 2006 #3
    Thank you.
     
Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?



Similar Discussions: PH of a mixed solution: is this right?
  1. PH of solution (Replies: 1)

  2. PH of solution (Replies: 1)

  3. PH solution (Replies: 40)

Loading...