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Topic: simple ionic strength  (Read 3614 times)

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Offline slvcs

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simple ionic strength
« on: November 19, 2007, 10:17:15 PM »
A cation-sensitive electrode displays a (referenced) potential of 224.6 mV in a 0.0146-M CaCl2 solution.

Calculate the ionic strength of the above solution.

I got all my practice problems but what does 224.6mV have anything to do with this.  Do i use Ksp??
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Offline Borek

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Re: simple ionic strength
« Reply #1 on: November 20, 2007, 02:40:13 AM »
E tells you what is activity of Ca2+ - how is activity related to concentration?

http://www.chembuddy.com/?left=pH-calculation&right=ionic-strength-activity-coefficients
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