How many moles of H3O+ or OH- must you add per liter of HA solution to adjust its pH from 4.52 to 5.25? Assume?

Follow
  • Follow publicly
  • Follow privately
  • Unfollow
How many moles of H3O+ or OH- must you add per liter of HA solution to adjust its pH from 4.52 to 5.25? Assume a negligible volume change.
Please explain!
Thanks!
Best AnswerAsker's Choice
look at he concentrations of H3O+ ions in both solutions

pH 4.52 [H3O+]=10^-4.52=3.02*10^-5M

pH 5.25 [H3O+]=10^-5.25=5.62*10^-6M

So to go to 3.20*10^-5M to 5.62*10^-6M , you must neutralize some H3O+ ions adding OH- ions in concentrations
3.02*10^-5 - 5.62*10^-6=2.46*10^-5M of ions OH-

Asker's rating & comment

5 out of 5
Thanks!
  • 1
  • Comment
Sign In 

to add your answer

No other answers

Who is following this question?

    %
    BEST ANSWERS
    Member Since:
    Points: Points: Level
    Total Answers:
    Points this week:
    Follow
     
    Unfollow
     
    Block
     
    Unblock