Vernier Software and Technology
Vernier Software & Technology

Conducting Solutions

Figure from experiment 16 from Physical Science with Vernier

Introduction

In this experiment, you will study the electrical conductivity of water and various water solutions. A solution can contain molecules, ions, or both. Some substances, such as sucrose (C12H22O11), dissolve to give a solution containing mostly molecules. An equation representing the dissolving of sucrose (table sugar) in water is

{{\text{C}}_{{\text{12}}}}{{\text{H}}_{{\text{22}}}}{{\text{O}}_{{\text{11}}}}{\text{(s)}} \to {{\text{C}}_{{\text{12}}}}{{\text{H}}_{{\text{22}}}}{{\text{O}}_{{\text{11}}}}{\text{(aq)}}

Other substances, such as calcium chloride (CaCl2), dissolve in water to produce a solution containing mostly ions. An equation is

{\text{CaC}}{{\text{l}}_{\text{2}}}{\text{(s)}} \to {\text{C}}{{\text{a}}^{{\text{2 + }}}}{\text{(aq)  +  2 C}}{{\text{l}}^{\text{ - }}}{\text{(aq)}}

Objectives

In this experiment, you will

  • Write equations for the dissolving of substances in water.
  • Use a Conductivity Probe to test the electrical conductivity of solutions.
  • Determine which, molecules or ions, are responsible for electrical conductivity of solutions.

Sensors and Equipment

This experiment 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 Physical Science with Vernier »

Physical Science with Vernier

See other experiments from the lab book.

1Temperature Probe Response Time
2Boiling Temperature of Water
3Freezing and Melting of Water
4Evaporation of Alcohols
5Endothermic and Exothermic Reactions
6Neutralization Reactions
7Mixing Warm and Cold Water
8Heat of Fusion
9Energy Content of Fuels
10Energy Content of Foods
11Absorption of Radiant Energy
12An Insulated Cola Bottle
13A Good Sock
14Insolation Angle
15Solar Homes and Heat Sinks
16Conducting Solutions
17Conductivity of Saltwater: The Effect of Concentration
18Acid Strengths
19Frictional Forces
20First-Class Levers
21Pulleys
22An Inclined Plane
23Reflectivity of Light
24Polarizing Light
25How Bright is the Light?
26Electromagnets: Winding Things Up
27Magnetic Field Explorations
28Household Acids and Bases
29Acid Rain
30Gas Pressure and Volume
31Gas Temperature and Pressure
32Fun with Pressure
33Lemon "Juice"
34Simple Circuits
35Graphing Your Motion
36Speeding Up
37It's Race Day
38Crash Lesson
39Newton's Second Law
40Falling Objects

Experiment 16 from Physical Science with Vernier Lab Book

<i>Physical Science with Vernier</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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Dev Reference: VST0256

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