Homework Help: chemistry

Posted by hello on Thursday, February 25, 2010 at 10:44pm.

What would be the pH of a solution of hy-
poiodous acid (HOI) prepared by dissolving
144 grams of the acid in 200 mL of pure water
(H2O)? The Ka of hypoiodous acid is 2Ąż10−11

1. 7
2. 10
3. 13
4. 5
5. 1

chemistry - DrBob222, Friday, February 26, 2010 at 12:15am
HOI ==> H^+ + OI^-

Ka = (H^+)(OI^-)/(HOI)
At equilibrium,
(H^+) = x
(OI^-) = x
(HOI) = moles/L. moles = 144 g/molar mass HOI and L = 0.2. So at equilibrium (HOI) = M-x
Solve for x and convert to pH.
chemistry - Anonymous, Sunday, April 24, 2011 at 8:19pm
7
chemistry - go to hell ANONYMOUS, Wednesday, May 18, 2011 at 11:30pm
the freakin' answer is #4. the pH is 5. don't post up answers if they won't f-ing help, smarta**.
chemistry - go to hell ANONYMOUS, Wednesday, May 18, 2011 at 11:30pm
the freakin' answer is #4. the pH is 5. don't post up answers if they won't f-ing help, smarta**.
chemistry - go to hell ANONYMOUS, Wednesday, May 18, 2011 at 11:31pm
said it twice for added effect......

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