Homework Help: chemistry

Posted by mandy on Thursday, April 1, 2010 at 1:58am.

The value of pKb for the base ethylamine (CH3CH2NH2) is 3.19 at 25°C, while the pKa for formic acid
(HCO2H) is 3.74, also at 25°C.
a)

Calculate
the value of the equilibrium constant Kc for the following aqueous equilibrium:

HCO2– (aq) + CH3CH2NH3+(aq)-->HCO2H(aq) + CH3CH2NH2(aq)

chemistry - DrBob222, Thursday, April 1, 2010 at 12:38pm
Check me out on this but I believe K for the hydrolysis of the salt is K = (Kw/KaKb)
chemistry - DrBob222, Thursday, April 1, 2010 at 4:08pm
Right. For the hydrolysis reaction K = Kw/KaKb.
For the acid + base ==> salt, K = KaKb/Kw

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