Conductance Of Electrolytic Solutions
Chapter Name : Electrochemistry |
Sub Topic Code : 102_12_03_05_02 |
Topic Name : Conductance Of Electrolytic Solutions |
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Sub Topic Name : Measurement Of Conductivity Of Ionic Solutions |
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Introduction
• A specially designed vessel called a conductivity cell is used to measure the conductivity of ionic solutions, using an alternating current (AC). • Once the cell constant and the resistance of the solution in the cell is determined, the conductivity of the solution can be measured.
Pre-Requisites:
Electrochemical cell, voltage, ionic solution, conductance, resistance
Activity:
Salt solution conducts electricity as it forms an ionic solution in water.
Real Life Question:
Does salt solution conduct electricity?
Key Words / FlashCards
| Key Words | Definitions (pref. in our own words) |
|---|---|
| Electrolyte | Electrolyte is a solution which conducts electricity. |
Learning aids / Gadgets
| Gadgets | How it can be used |
|---|---|
| Salt water, bulb with a circuit | Dip a circuit bulb in a salt solution and then in normal water. Notice the intensity of the light in the bulb. |
Real life uses :
Conductivity of ionic solutions is important for the human body.
Places to visit :
Garage, switchboard
Practical examples around us
| Examples | Explainations |
|---|---|
| Salt solution | A salt solution conducts electricity. |
What you learn in Theory:
Conductance is the measure with which electricity is conducted, Conductivity of ionic solutions is measured using conductivity meters and depend on resistance and conductance.
What you learn in Practice:
Conductors allow passage of electricity whereas insulators do not allow passage of electricity.