Vernier Software and Technology
Vernier Software & Technology

Conductivity of Aqueous Solutions

Figure from experiment 4 from Investigating Chemistry through Inquiry

Introduction

In this experiment, you will investigate some properties of strong electrolytes, weak electrolytes, and nonelectrolytes by observing the behavior of these substances in aqueous solution. You will investigate these properties using a Conductivity Probe. When the probe is placed in a solution that contains ions, and thus has the ability to conduct electricity, an electrical circuit is completed across the electrodes that are located on either side of the hole near the bottom of the probe body, and this produces a conductivity reading. The unit of conductivity used in this experiment is the microsiemens per centimeter, or ┬ÁS/cm.

Objectives

In the Preliminary Activity, you will gain experience using a Conductivity Probe and data- collection software. You will first measure the conductivity of distilled water, and then, after adding NaCl solid to the distilled water, you will measure the conductivity of the resulting NaCl solution.

After completing the Preliminary Activity, you will first use reference sources to find out more about electrolytes and the electrical properties of aqueous solutions before you choose and investigate a researchable question dealing with the conductivity of aqueous solutions.

Sensors and Equipment

This investigation features the following Vernier sensors and equipment.

Option 1

Option 2

Additional Requirements

You may also need an interface and software for data collection. What do I need for data collection?

Standards Correlations

See all standards correlations for Investigating Chemistry through Inquiry »

Investigating Chemistry through Inquiry

See other experiments from the lab book.

1Physical Properties of Water
2Baking Soda and Vinegar Investigations
3An Investigation of Urea-Containing Cold Packs
4Conductivity of Aqueous Solutions
5Identifying a Pure Substance
6Investigating the Energy Content of Foods
7Investigating the Energy Content of Fuels
8Evaporation and Intermolecular Attractions
9Enthalpy Changes
10Reaction Stoichiometry
11Beer's Law Investigations
12Colligative Properties of Solutions
13Long Term Water Monitoring
14Vapor Pressure and Heat of Vaporization Investigations
15Acid-Base Properties of Household Products
16The Effect of Acid Deposition on Aqueous Systems
17Acid-Base Titrations
18Conductimetric Titrations
19Oxidation-Reduction Titrations
20Investigating Voltaic Cells
21Baking Soda and Vinegar Investigations Revisited
22Reaction Rates
23Enzyme Activity
24Sugar Fermentation by Yeast
25Nuclear Radiation

Investigation 4 from Investigating Chemistry through Inquiry Lab Book

<i>Investigating Chemistry through Inquiry</i> book cover

Included in the Lab Book

Vernier lab books include word-processing files of the student instructions, essential teacher information, suggested answers, sample data and graphs, and more.

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