CHEM 212 Lecture Notes - Lecture 14: Equivalence Point, Titration Curve, Analyte
16 Oct 2016
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Dont have to take the time to make a really good quality ppt. Titration= addition of measurments of a reagent solution. Indicator- observable property (colour) that changes near the equivalence point. Near bc how good are these indicators--> picking an indicator that changes colour near ph of your end point. Equivalance point: when quantity of titrant is added in exact amount needed for stoichiometric rxn with analyte. Measure a signal while doing the titration, keep going until signal doesn"t change any more then plot signal on y axis vs volume of titrant and nd endpoint graphically. Direct titration- add titrant from buret until run complete. Back titration- add a known amount of reagent to the analyte. Then titrate the leftover of the 1st reagent with a 2nd reagent. Amount of analyte= amount of 1st reagent-amount of second reagent. Use when reaction is not fast or is not easy to nd the end point.
