chem class

posted by .

What is the concentration (in M) of hydroxide ions in a solution at 25°C with pH = 4.282?

  • chem class -

    I would do it this way.
    pH + pOH = pKw = 14
    Solve for pOH.
    Then pOH = -log(OH^-) and solve for OH^-

    You could convert pH to H^+, then
    (H^+)(OH^-) = 1 x 10^-14
    and solve for OH^-

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. ap chemistry

    What is the concentration (in M) of hydronium ions in a solution at 25 degrees C with a pH = 4.282?
  2. science/chemistry

    thank you! What is the molar concentration of hydroxide ions in a solution with a pH of 6?
  3. Chemistry

    I still need help with this problem... Calculate the concentration of the solution the molality of hydroxide ions in a solution prepared from 9.16 g of barium hydroxide dissolved in 179 g of water I do not know how to approach this...I …
  4. College Chemistry

    1) The concentration of the aluminum ion in a test solution is 0.10M. Using the Ksp for aluminum hydroxide (3. x 10^-34), calculate the concentration of hydroxide needed to precipitate aluminum hydroxide. From the concentration of …
  5. Chemistry

    When HCl(aq) is exactly neutralized by NaOH(aq), the hydrogen ion concentration in the resulting mixture is a. always equal than the concentration of the hydroxide ions b.sometimes greater and sometimes less than the concentration …
  6. Physical Chem

    A student added solid K2O to a 750.0 mL volumetric flask. The solid was dissolved in water and then the flask filled with water to the mark. This formed 750.0 mL of the initial KOH solution. 20.0 mL of the initial solution was transferred …
  7. chemistry

    which solution has the highest concentration of hydroxide ions?
  8. Science

    5. You have made the following two solutions: X) hydrogen ion concentration = 1 x 10-5M Y) pH = 4 State which statements below are true and which are false: a. Solution X contains 1 x 10-9M hydroxide ions. b. Solution X contains more …
  9. chemistry

    A student took 100 mL of a solution of Mg(OH)2 and reacted it with HCl (aq) to calculate the concentration of hydroxide ions in the solution. If 13.75 mL of 0.010M HCl was used to react with all of the OH- (aq) in the 100-mL solution, …
  10. Chemistry

    Water molecules can dissociate into hydronium ions (H3O+ ,often just called H+ for shorthand) and hydroxide ions (OH-). The concentration of each of these ions in pure water is 10^-7. In other words, in pure water one out of every …

More Similar Questions