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chemistry

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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

  • chemistry -

    Do you know the difference between m and M? Should these concns be m or M?

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