Advanced Chemistry Through Inquiry Teacher Guide

(PS-2828)

Teacher manual for AP* and Advanced Chemistry labs. Has both the printed version and a flash drive with teacher tips, a PDF of teacher version and editable Word student version.

Moving Electrons

Lab Summary

Reactions that occur without outside intervention are said to occur spontaneously. Non-spontaneous reactions can occur if some outside factor provides enough energy. Electrolysis is the process of using electricity to force a non-spontaneous reaction to occur. Electrolysis can be used to separate pure metals from their ore and plate metals onto surfaces.

How can you make a non-spontaneous reaction do useful things?

Theory

By electrolyzing a variety of aqueous solutions, students determine a relationship between current, electric charge, and quantity of electrons.

Method

The student can make qualitative or quantitative predictions about galvanic or electrolytic reactions based on half-cell reactions and potentials and/or Faraday's laws.
LO 3.13 / The student can analyze data regarding galvanic or electrolytic cells to identify the properties of the underlying redox reactions.

Sensors / Equipment Used:

PASPORT Voltage-Current Sensor

(PS-2115)

Allows students to safely measure voltage and current simultaneously without overloading the sensor. For use with PASPORT Interfaces.

The Associated Bundle:

Chemistry Standard Sensor Bundle

(PS-2927C)

Contains the sensors and probes needed to perform all 17 experiments in the Advanced Chemistry Teacher Guide and all 25 labs in the Chemistry through Inquiry Guide.

Interface Required

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