Featured in PASCO’s College Chemistry Instructor Guide

College Chemistry Instructor Guide

(PS-3803A)

College Instructor edition with 36 experiments covering introductory and general chemistry topics.

Standardize Sodium Hydroxide

Lab Summary

Use a pH sensor and drop counter to determine the concentration of a sodium hydroxide solution by titrating it with a standard solution of known concentration.

Theory

Students determine the concentration of a sodium hydroxide solution by titrating it with a standard solution of known concentration.

Method

Students gain experience conducting the following procedures:

  • Calibrating a pH sensor and a drop counter.
  • Preparing a titrant solution.
  • Preparing a standard solution.
  • Performing a titration and using the results to calculate the concentration of the titrant.

Sensors / Equipment Used:

PASPORT Chemistry Sensor

(PS-2170)

Allows students to measure Temperature, pH/ISE/ORP, Absolute Pressure & Voltage in one sensor. For use with PASPORT Interfaces.

PASPORT High Accuracy Drop Counter

(PS-2117)

Is a professional drop counter that allows students to capture detailed titration data. For use with PASPORT Interfaces.

Materials Used:

Micro stir bar
Magnetic stirrer 
Ring stand 
Beaker, 100-mL - 2
Beaker, 10-mL - 2
Volumetric flask, 100-mL 
Buret, 50-mL 
Clamp, buret 
Clamp, right-angle 
Funnel 
Potassium hydrogen phthalate (KHP) - 0.6 g
Sodium hydroxide (NaOH) - 0.40 g
Buffers, pH 4 and pH 10 - 10 mL
Water, deionized - 250 mL
Wash bottle with deionized water 
Parafilm® or aluminum foil 
Cotton swab or tissue 

The Associated Bundle:

Advanced Chemistry Standard Sensor Bundle

(PS-2928A)

Contains the probeware for completing experiments in the College Chemistry lab manual.

Interface Required

This experiment may require software and an interface for data collection.