You will titrate 25.00ml of histidine dihydrochloride solution of unknown concentration with the secondary standard naoh solution prepared in the last experiment. the unknown histidine dihydrochloride solutions have concentrations in the range 0.022-0.030m. use a value of 0.025m histidine dihydrochloride to estimate the volume of naoh required to completely deprotonate the histidine dihydrochloride. you will need to use the concentration of naoh from your last experiment. this calculated volume is an estimate of the third equivalence point. use this value to estimate the first and second equivalence point volumes.
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