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April 23, 2014

Homework Help: chemsitry

Posted by Anonymous on Sunday, March 4, 2012 at 7:24pm.

1)100ml sample of solution that is 0.2M in both Naf and Hf has 4.0 ml of 1.0M hcl added to it. calculate the ph change of this soultion .ka =7.2*10^-4


2)40 ml of 0.32M benzoic acid if titrated with 60 ml of 0.2 M naoh. clacilate the ph of the resulting solution at the equivalence point. ka =4.9*10^-9

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