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Topic: pH and OH- conc.  (Read 2440 times)

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Offline scarpia

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pH and OH- conc.
« on: November 16, 2011, 06:04:37 PM »
Ammonia is dissolved in water to make 0.01 M NH3(aq). Kb is 1.79 * 10^-7. Calculate hydroxide ion concentration?

As a final solution I got that OH- conc. is 4.14*10^-4, so if anyone could check it?

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Offline Dan

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Re: pH and OH- conc.
« Reply #1 on: November 17, 2011, 03:02:03 AM »
That's not what I got. Show your working, and your concentration needs units.
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Offline AWK

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Re: pH and OH- conc.
« Reply #2 on: November 17, 2011, 06:12:59 AM »
Quote
Kb is 1.79 * 10^-7
Kb for ammonia is quite different - close to 1.79 * 10^-5
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