Base Strength

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Edris Saadat 1A
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Joined: Fri Sep 25, 2015 3:00 am

Base Strength

Postby Edris Saadat 1A » Sun Nov 22, 2015 6:09 pm

How would you place bases in order of strength? From question 12.42, it asks: Place the following bases in order of increasing strength CN-, (C2H5)3N, N2H4, BrO-. Is there a trend in how you determine strength?

hannaluong4E
Posts: 22
Joined: Fri Sep 25, 2015 3:00 am

Re: Base Strength

Postby hannaluong4E » Sun Nov 22, 2015 6:39 pm

You would look at their KB values. Higher KB values indicate stronger bases. Table 12.2 lists the KB values for (C2H5)3N and N2H4. And for the other two you would look at their conjugate acid KA values from Table 12.1 and convert it to KB through the relationship KA x KB = Kw, where Kw=10-14.

Hope that helps!


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