1. a. De%uFB01ne the analyte in a titration.
b. Is the indicator generally added to the titrant or theanalyte in a titration?
2. a. What is the primary standard used in this experiment?De%uFB01ne a primary standard.
b. What is the secondary standard used in this experiment?De%uFB01ne secondary standard.
3. Distinguish between a stoichiometric point and an endpoint inan acid%u2013base titration
4. a. When rinsing a buret after cleaning it with soap andwater, should the rinse be dispensed through the buret tip orthe
top opening of the buret? Explain.
b. In preparing the buret for titration (Experimental Procedure,Part A.5), the %uFB01nal rinse is with the NaOH titrant rather thanwith deionized water. Explain.
c. How is a %u201Chalf-drop%u201D of titrant dispensed from aburet?
5. In Part A.1, a 4-g mass of NaOH is dissolved in 5 mL ofwater. In Part A.3, a 4-mL aliquot of this solution is dilutedto
500 mL of solution. What is the approximate molar concentrationof NaOH in the diluted solution? Enter this information on yourReport Sheet.
6. a. A 0.397-g sample of potassium hydrogen phthalate, KHC8H4O4(molar mass = 204.44 g/mol) is dissolved with 50
mL of deionized water in a 125-mL Erlenmeyer %uFB02ask. Thesample is titrated to the phenolphthalein endpoint with
16.22 mL of a sodium hydroxide solution. What is the molarconcentration of the NaOH solution?
b. A 25.00-mL aliquot of a nitric acid solution of unknownconcentration is pipetted into a 125-mL Erlenmeyer %uFB02ask
and 2 drops of phenolphthalein are added. The above sodiumhydroxide solution (the titrant) is used to titrate the nitric acidsolution (the analyte). If 12.75 mL of the titrant is dispensedfrom a buret in causing a color change of the
phenolphthalein, what is the molar concentration of the nitricacid solution?
