chemistry

What is the pOH of a 0.032 M Ca(OH)2 (strong base) solution?

i solved it by doing

14=-log (0.064)
14-1.19= 12.81

but the right answer is 1.19, why? i thought the OH in the problem meant i had to use 14?

  1. 👍 0
  2. 👎 0
  3. 👁 194
asked by jessie
  1. You calculated the pH not the pOH

    pOH=-log([OH]/mole l^-1)

    pH=-log([H]/mole l^-1)

    Note that pOH=14-pH is only valid at 25C.

    1. 👍 0
    2. 👎 0
    posted by Dr Russ

Respond to this Question

First Name

Your Response

Similar Questions

  1. chem

    hey guys I posted this awhile ago im not sure if anyone has read it or whatever but here it is again find the PH of a .00580 M solution of the strong base KOH. is it -log(.00580)= 2.24 pOH = -log[OH-] pH + pOH = 14.00 Therefore,

    asked by chris on March 22, 2007
  2. Chemistry, #3

    Thallium hydroxide is a strong base used in the synthesis of some organic compounds. Calculate the pH of a solution containing 2.55 g TIOH per liter. Sorry! I'm having a really hard time with this acid/base stuff! TlOH is a strong

    asked by Taasha on August 4, 2007
  3. Chem

    Calculate the molarity (M) of a solution of the strong base Ca(OH)2 if the pOH is 0.650. pOH= 0.650 pH = 14-0.650 pJ=13.35 -log(13.35) = -1.13

    asked by Jamal on October 15, 2016
  4. Chemistry

    Complete this table of values for four aqueous solutions at 25 °C. Solution A: [H+]=0.0093M [OH-]=? pH=? pOH=? Solution B: [H+]=?[OH-]=1.4e-6M pH=? pOH=? Solution C: [H+]=?[OH-]=? pH=5.36 pOH=? Solution D: [H+]=?[OH-]=? pH=?

    asked by Help on October 20, 2011
  5. Chemistry

    Complete this table of values for four aqueous solutions at 25 °C. Solution A: [H+]=0.0093M [OH-]=? pH=? pOH=? Solution B: [H+]=?[OH-]=1.4e-6M pH=? pOH=? Solution C: [H+]=?[OH-]=? pH=5.36 pOH=? Solution D: [H+]=?[OH-]=? pH=?

    asked by Help on October 20, 2011
  6. CHEMISTRY

    HOW CAN U TELL IF HNO3 +KNO3 IS A BUFFER SOLUTION A buffer solution must contain a weak acid and its conjugate base OR a weak base and its conjugate acid. HNO3 is a strong base and KNO3 is the salt of a strong base (KOH) and a

    asked by CANDY on February 27, 2007
  7. chemistry

    Sometimes the basicity of a solution is reported using pOH (pOH = -log[OH-]). What is the a. [OH-] if pOH = 1.90 b. [H3O+] if pOH = 12.94 c. pH if pOH = 9.70

    asked by amber on March 18, 2014
  8. Chemistry

    Sometimes the basicity of a solution is reported using pOH (pOH = -log[OH-]). What is the a. [OH-] if pOH = 1.90 b. [H3O+] if pOH = 12.94 c. pH if pOH = 9.70

    asked by chelsey on March 11, 2014
  9. chemistry

    What mass in grams of potassium hydroxide is cntained in 500 mL of solution that has a pH of 11.5? For Further Reading chemistry - DrBob222, Sunday, April 6, 2008 at 12:09am pH = 11.5 pOH = 14 - 11.5 = 2.5 pOH = -log(OH^-) ] 2.5

    asked by Sarah on April 6, 2008
  10. AP Chemistry

    A solution is prepared by titrating a 100.0 mL sample of 0.10 M HF (Ka = 7.2 × 10-4) with 0.10 M NaOH a. Does the solution contain a strong acid with a strong base, a strong acid with a weak base, a weak acid with a strong base,

    asked by Anonymous on March 23, 2016

More Similar Questions