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.

Mole Relationship in Reaction

Lab Summary

Use a conductivity sensor to determine the stoichiometric coefficients of the reactants of a chemical reaction.

Theory

Students determine the stoichiometric coefficients of the reactants of a chemical reaction using conductivity.

Method

Students gain experience conducting the following procedures:

  • Using conductivity to monitor a reaction.
  • Determining the stoichiometric ratio of the reactants.

Sensors / Equipment Used:

PASPORT Conductivity Sensor

(PS-2116A)

Utilizes platinum probes for greater range and improved accuracy in high & low concentrations.

Materials Used:

Test tubes, 15-mL - 9
Beaker, 100-mL 
Graduated pipet, 10-mL - 2
Pipet bulb 
Test tube rack 
Unknown solution (use potassium chromate) - 50 mL
0.01 M Silver nitrate (AgNO3) - 50 mL
Wash bottle with deionized water 
Parafilm® 
Marking pen

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.