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(Solved): Experiment 9 Prelaboratory Assignment A Volumetric Analysis 1. a. What is the titrant for this exper ...
Experiment 9 Prelaboratory Assignment A Volumetric Analysis
1. a. What is the titrant for this experiment? b. Is the indicator generally added to the titrant or the analyte in a titration? 2. a. What is the primary standard used in this experiment (name and formula)? Define a primary standard. b. What is the secondary standard used in this experiment (name and formula)? Define a secondary standard. 3. Distinguish between a stoichiometric point and an endpoint in an acid-base titration. 4. a. When rinsing a buret after cleaning it with soap and water, should the rinse be dispensed through the buret tip or the top opening of the buret? Explain. b. Experimental Procedure, Part A.4. In preparing the buret for titration, the final rinse is with the \( \mathrm{NaOH} \) titrant rather than with deionized water. Explain. 5. Part A.3. Calculate the mass of \( \mathrm{KHC}_{8} \mathrm{H}_{4} \mathrm{O}_{4} \) (molar mass \( =204.23 \mathrm{~g} / \mathrm{mol} \) ) that reacts with \( 15 \mathrm{~mL} \) of the \( 0.15 \mathrm{M} \mathrm{NaOH} \) solution prepared in Part A.2. Express this mass \( \mathrm{KHC}_{8} \mathrm{H}_{4} \mathrm{O}_{4} \) to the correct number of significant figures and record the calculation on the Report Sheet.
1) answer 4. a) When rinsing the buret with soap and water, the rinse should be dispensed from the tip and not the top opening. Because we need to clean the tip of the buret also. It i