Chemistry

The ksp of aluminum hydroxide is 5.6e-17. What is the concentration of hydroxide in a saturated solution?

For the answer I got
[AlOH] <=> [Al] [OH]^2
5.6e-17 x 3x
5.6e-17 = 3x^4
x = 6.6e-5

Is this right? I'm not sure about 3x^4 part...

  1. 👍 0
  2. 👎 0
  3. 👁 157
  1. yep its right

    1. 👍 0
    2. 👎 0
  2. No it isn't right.
    Al(OH)3 ==> Al^3+ + 3OH^-
    Ksp = (Al^3+)(OH^-) = 5.6E-17
    (Al^3+) = x
    (OH^-) = 3x
    (x)(3x)^3 = 5.6E-17
    27x^4 = 5.6E-17
    Solve for x, then multiply that by 3 for OH^-

    1. 👍 0
    2. 👎 0
  3. Thank you !!

    1. 👍 0
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. Chemistry

    At 22 °C an excess amount of a generic metal hydroxide M(OH)2, is mixed with pure water. The resulting equilibrium solution has a pH of 10.56. What is the Ksp of the compound at 22 °C? I have found my [OH-] concentration

    asked by Miaow on April 1, 2012
  2. Chemistry

    During a titration experiment, a 150.0 mL solution of 0.05 M sulfuric acid (H2SO4) is neutralized by 300.0 mL solution with an unknown concentration of sodium hydroxide (NaOH). What is the concentration of the sodium hydroxide

    asked by Summer on March 24, 2018
  3. Chemistry

    In a saturated solution of silver phosphate, the concentration of silver ion is 4.5 x 10^-4 mol/L. The Ksp of silver phosphate would be which of the following? 6.8  10-8 1.0  10-11 1.4  10-14 none of the above 1.5 

    asked by Bobby on March 12, 2010
  4. 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

    asked by Julia on April 20, 2010
  5. chemistry

    Al2(SO4)3+6KOH-->2Al(OH)3+3K2SO4 a)How many grams of potassium hydroxide are needed to completely react with 870 mg of aluminum sulfate? b)If you want to make 7.00 grams of potassium sulfate, how many grams of aluminum sulfate

    asked by ashley on April 29, 2013
  1. Chemistry

    Aluminum sulfate reacts with calcium hydroxide (from lime) to form aluminum hydroxide and calcium sulfate. Write the balanced formula unit equation for the reaction.

    asked by Ana on September 28, 2014
  2. Chemistry

    During a titration experiment, a 150.0 mL solution of 0.05 M sulfuric acid (H2SO4) is neutralized by 300.0 mL solution with an unknown concentration of sodium hydroxide (NaOH). What is the concentration of the sodium hydroxide

    asked by Summer on March 24, 2018
  3. Chemistry

    a solution saturated in calcium hydroxide(limewater) has a pH of 12.35. What is Ksp for calcium hydroxide? How do i start this problem. please

    asked by LT on April 10, 2008
  4. Chemistry

    The Ksp of calcium hydroxide, Ca(OH)2, is 4.68 x 10-6 at 289.15K. Calculate the pH of a saturated solution. Here's my work: 4.68 x 10-6= 4s^3 s= 0.0105 -log(0.0105)= 1.98 14-1.98=12.02 The answer is supposed to be 12.324, but I'm

    asked by Mandy on December 4, 2014
  5. Chemistry

    Complete and balance the following neutralization reactions. then, write the names of all the reactants and all the products in each chemical reaction. A) HNO3 + Al(OH)3 = 3HNO3 + Al(OH)3 -> Al(NO3)3 + 3H2O Reactants: Nitric acid,

    asked by Derrick on July 12, 2010
  6. Chemistry

    The Ksp for nickel(II) hydroxide is 5.47E-16. What is the base dissociation constant for nickel(II) hydroxide? So I started off doing Ni(OH)2 (s) Ni2+ (aq) + 2OH- (aq) I ..........................0 .................0 C

    asked by a Canadian on April 8, 2013

You can view more similar questions or ask a new question.