NaOH Titration Flashcards

Flashcards for NaOH concentration determination by titration.

Objective of the practicum

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

Research Problem

To determine the concentration of sodium hydroxide by titration with a standardized 0.10 mol/L HCl solution.

Information to gather

The principle behind titration, especially acid-base titrations, and the role of acid-base indicators.

Materials needed

Buret, stand, buret clamp, 250 mL Erlenmeyer flask, 100 mL graduated cylinder, 10 mL pipette, funnel, white card.

Substances needed

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

Titration procedure

Add phenolphthalein to NaOH in Erlenmeyer flask, fill buret with HCl, titrate until colorless, repeat three times to calculate average volume.

Measurements

Record initial buret reading, final buret reading, and the volume of HCl added during each titration.

Calculations

To calculate the concentration of NaOH in mol/L and m/V%.

Evaluation

Reflect on whether the calculated concentration matches the label and possible reasons for discrepancies.