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.

Decomp of Hydrogen Peroxide

Lab Summary

Use an absolute pressure sensor and stainless steel temperature sensor to determine the rate constant of a chemical reaction.

Theory

Students determine the rate constant of a chemical reaction.

Downloads

  • Sample Student Handout (407 KB – PDF)
  • Sample Teacher Information (466 KB – PDF)
  • Method

    Students gain experience conducting the following procedures:

    • Using a catalyst to increase the rate of a reaction.
    • Measuring the pressure generated by the reaction in order to determine the change in concentration of a reactant.
    • Calculating the order of the reactants as a means to calculating the rate constant of the limiting reaction.

    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 Sensor Extension Cable

    (PS-2500)

    Allows an additional two meter length extension on all PASPORT sensors.

    Materials Used:

    Beaker, 100-mL - 3
    Erlenmeyer flask, 250-mL
    Graduated pipet, 25-mL -3 
    Pipet bulb - 3
    Stopper with two holes for the Erlenmeyer flask
    Beaker, 50-mL
    Glycerin - several drops
    0.1000 M Potassium iodine (KI) - 60 mL
    3% Hydrogen peroxide (H2O2) - 40 mL
    Deionized water - 100 mL
    Electrical tape, 60 in. (optional)

    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.