Posted by S on Tuesday, February 21, 2012 at 9:23pm.
A detergent solution has a pH of 11.63 at 25°C. What is the hydroxide-ion [OH-] concentration?
Chemistry - DrBob222, Tuesday, February 21, 2012 at 9:30pm
pH + pOH = pKw = 14. Solve for pOH, then pOH = -log(OH^-).
Solve for OH^-
OR you can use
pH = -log(H^+) and solve for )H^+), then
(H^+)(OH^-) = Kw = 1E-14
and solve for OH^-
Chemistry - S, Tuesday, February 21, 2012 at 9:30pm
Is this the correct way to set it up & solve for the problem?
[OH-] = 10^-11.63
[OH-] = 2.34E-12
I wasn't sure if it was the same set up as it is for the hydronium ion.
Chemistry - DrBob222, Tuesday, February 21, 2012 at 9:34pm
No. The pH is 11.63, your set up calculates (H^+). I would do
14-11.63 = 2.37 = pOH, then
(OH^-) = 10^-2.37 = 4.27E-3.
Chemistry - S, Tuesday, February 21, 2012 at 9:37pm
Okay, thanks so much for your help!! :)
Answer This Question
More Related Questions
- Chemistry - The pH of a solution is 1. Which of the following statements are ...
- chemistry - what are the hydronium-ion and the hydroxide ion concentration of a ...
- College Chemistry - 1) The concentration of the aluminum ion in a test solution ...
- Physics - I just wanted to clarify anwsers. Question 23. Nucleotides contain ...
- biochemistry - I just wanted to clarify anwsers. Question 23. Nucleotides ...
- Chemistry - If a solution of Ca(OH)2 has a pH of 12.31 how can I calculate the ...
- Chemistry - When HCl(aq) is exactly neutralized by NaOH(aq), the hydrogen ion ...
- Chemistry - The hydronium ion concentration for a solution is determined to be 4...
- chemistry - what is the concentration of the hydroxide ion in a solution if .12 ...
- Chemistry - Given the concentration of either hydrogen ion or hydroxide ion, use...