NaOH Titration Flashcards

Flashcards for reviewing the NaOH titration experiment.

Goal of the Experiment

The determination of the concentration of sodium hydroxide by titration with a standard 0.10 mol/L HCl solution.

Additional Goal

To learn how to work with volumetric material such as a volumetric flask, pipette, pipette pump, and burette.

Research Problem

Determine the concentration of sodium hydroxide by titration with a standard 0.10 mol/L HCl solution.

Materials

Burette, stand, burette clamp, 250 mL Erlenmeyer flask, 100 mL graduated cylinder, 10 mL pipette, funnel, white card

Substances

Phenolphthalein, distilled water, NaOH solution, HCl solution 0.10 mol/L

Step 1 of the Procedure

Add a few drops of phenolphthalein to 10 mL of NaOH solution in an Erlenmeyer flask and homogenize.

Step 2 of the Procedure

Fill the burette with the 0.10 mol/L HCl solution.

Step 4 of the Procedure

Titrate until colorless.

Step 6 of the Procedure

Perform the titration three times and calculate the average volume added.

Calculations

Calculate the concentration of NaOH in the solution expressed in mol/L and m/V%.

Evaluation Question

Does the calculated concentration match the value on the label? If not, what could be the reason?