Kaushik Datta: Created page with "{| border=1 ||'''Visual Cue''' ||'''Narration''' |- ||'''Slide Number 1''' '''Title Slide''' || Hello everyone. Welcome to this tutorial on '''Conductivity of ionic solution..."

2015-12-30T13:24:53Z

Created page with "{| border=1 ||'''Visual Cue''' ||'''Narration''' |- ||'''Slide Number 1''' '''Title Slide''' || Hello everyone. Welcome to this tutorial on '''Conductivity of ionic solution..."

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{| border=1
||'''Visual Cue'''
||'''Narration'''
|-
||'''Slide Number 1'''

'''Title Slide'''
|| Hello everyone.

Welcome to this tutorial on '''Conductivity of ionic solutions'''.
|-
||'''Slide Number 2'''

'''Learning Objectives'''

* Measure Conductivity

* Calculate the resistance of ionic solutions.
||In this tutorial we will learnt to:

* Measure Conductivity and

*Calculate the resistance of ionic solutions.
|-
||'''Slide Number 3'''

'''System Requirement'''

* '''ExpEYES''' v 3.1.0

* '''Ubuntu Linux''' OS v. 14.04.
||Here I am using,

* '''ExpEYES''' version 3.1.0

* '''Ubuntu Linux OS''' version 14.04
|-
||'''Slide Number 4'''

'''Pre-requisties'''

You should be familiar with:

'''ExpEYES''' interface.

For relevant tutorials, visit our website.

'''www.spoken-tutorial.org'''.
||To follow this tutorial, you should be familiar with:
'''ExpEYES''' Junior interface.

If not, for relevant tutorials, please visit our website.
|-
||
||Let's first define conductivity of a solution.
|-
||'''Slide Number 5'''

'''Electrical Conductivity'''
||'''Conductivity''' of a solution is a measure of its ability to conduct electricity.

'''Conductivity''' of water is directly related to the concentration of ions dissolved in it.
|-
||'''Slide Number 6'''

'''Conductivity of Tap Water'''

Demonstrate conductivity of tap water.
||Now we will demonstrate conductivity of tap water.
|-
||Show the picture.

Show the circuit diagram.
||I will explain the circuit connections.

'''A1''' is connected to '''SINE'''.

Wires from '''SINE''' and '''A2''' are dipped in glass tumbler containing tap water.

'''10K''' resistor is connected between '''A2''' and '''GND'''.

This is the circuit diagram.
|-
||
||Let's see the result on the '''Plot window'''.
|-
||Click on '''A1''' and drag to '''CH1'''.
Point to assigned value.
||On the '''Plot window''', click on '''A1''' and drag to '''CH1'''.

'''A1''' is assigned to '''CH1'''.
|-
||Click on '''A2''', drag to '''CH2'''.

Point to assigned value.
||Click on '''A2''', drag to '''CH2'''.

'''A2''' is assigned to '''CH2'''.
|-
||Move the '''mSec/div''' slider.

Point to the waves.
||Move the '''mSec/div''' slider to adjust the waves.

Two sine waves are generated.
|-
||Point to the black trace.

Point to the red trace.
||Black trace is the original sine wave.

Red trace is conductivity of tap water.
|-
||Click on '''CH1''', drag to '''FIT'''.

Click on '''CH2''', drag to '''FIT'''.

Point to voltage and frequency values.
||Click on '''CH1''' and drag to '''FIT'''.

Click on '''CH2''' and drag to '''FIT'''.

Observe the voltage and frequency values on the right side of the window.

Notice that voltage of tap water is very less compared to the input voltage.
|-
||Right click on '''CH1''.
||Right click on '''CH1''' to see voltages and Phase difference in degree.
|-
||'''Slide Number 7'''

'''Conductivity'''

Measure conductivity of copper sulphate solution.

One spatula of copper sulphate is dissolved in 100 ml of water.
||Now we will measure conductivity of copper sulphate solution.

To make the solution one spatula of copper sulphate is dissolved in 100 ml of water.
|-
||Show the picture.
||In the same connection,

wires from '''SINE''' and '''A2''' are dipped in copper sulphate solution.
|-
||Point to the Plot window.
||On the '''Plot window''' we can see the conductivity curve.
|-
||Point to the black trace.

Point to the red trace.
||Red trace is conductivity of copper sulphate solution.

Increased conductivity of is due to copper and sulphate ions present in the solution.
|-
||Point to voltage and frequency values.
||Observe the voltage and frequency values on the right.
|-
||Right click on '''CH1'''
||Right click on '''CH1''' to see voltages and '''Phase difference''' values.
|-
||'''Slide Number 8'''

'''Conductivity'''

Measure conductivity of dilute sulphuric acid solution.

A few drops of dilute sulphuric acid are added to water.
||Now we will measure conductivity of dilute sulphuric acid solution.

A few drops of dilute sulphuric acid are added to water.
|-
||Show the picture.
||Wires are dipped in sulphuric acid solution.
|-
||
||Let's see the result on the '''Plot window'''.
|-
||Point to the trace.
||Observe that black and red traces are almost coinciding with each other.

Conductivity of tap water has increased: on adding a few drops of dilute sulphuric acid.
|-
||Point to voltage and frequency values.
||Observe the voltage and frequency values on the right.
|-
||Right click on '''CH1'''.
||Right click on '''CH1''' to see voltages and '''Phase difference''' in degree.
|-
||'''Slide Number 9'''

'''Conductivity'''

Measure conductivity of dilute Potassium hydroxide solution.

A few drops of dilute Potassium hydroxide solution are added to water.
||We will measure conductivity of dilute Potassium hydroxide solution.

A few drops of dilute Potassium hydroxide solution are added to tap water.
|-
||Point to the trace.
||We can see that black and red traces are almost coinciding with each other.

Notice the increased conductivity of:
tap water on adding a few drops of Potassium hydroxide solution.
|-
||Point to voltage and frequency values.
||Observe the voltage and frequency values on the right side of the window.
|-
||Right click on '''CH1'''
||Right click on '''CH1''' to see voltages and Phase difference in degree.
|-
||Show the table.
||Using the voltage values we have calculated the resistance of ionic solutions and tabulated the results.

Resistance value for tap water is '''7.7 KOhm'''
Resistance value for:
* copper sulphate solution is '''1.2 KOhm'''
* sulphuric acid solution is '''0.17 KOhm''' and
* potassium hydroxide solution is '''0.14 KOhm'''.

Notice that resistance values decreased with the increase in ionic concentration.
|-
||
||Let's summarize.
|-
||'''Slide Number 10'''

'''Summary'''

We have learnt to:
* Measure Conductivity

* Calculate the resistance of the solutions.
||In this tutorial we have learnt to:

* Measure Conductivity and

*Calculate the resistance of ionic solutions
|-
||'''Slide Number 11'''

'''Assignment'''

* Using sodium hydroxide, Acetic acid and sodium chloride solutions,

* Measure conductivity and

* Calculate the resistance of ionic solutions.
||As an assignment,
* Using sodium hydroxide, Acetic acid and sodium chloride solutions,
* Measure conductivity and
* Calculate the resistance of ionic solutions.
|-
||'''Slide Number 12'''

'''Acknowledgement'''

Watch the video available at: '''http://spoken-tutorial.org/What is a Spoken Tutorial'''.

It summarises the Spoken Tutorial project.

If you do not have good bandwidth, you can download and watch it.
||This video summarises the Spoken Tutorial project.

If you do not have good bandwidth, you can download and watch it.
|-
||'''Slide Number 13'''

The Spoken Tutorial Project Team

Conducts workshops using spoken tutorials

Gives certificates to those who pass an online test

For more details, please write to, '''contact@spoken-tutorial.org'''.
||We conduct workshops using Spoken Tutorials and give certificates.

Please contact us.
|-
||Spoken Tutorial Project is a part of the Talk to a Teacher project

It is supported by the National Mission on Education through ICT, MHRD, Government of India More information on this Mission is available at:

'''http://spoken-tutorial.org/NMEICT-Intro'''.
||The Spoken Tutorial Project is funded by NMEICT, MHRD Government of India.
|-
||
||This tutorial is contributed by Kaushik Datta and Madhuri Ganapathi. Thank you for joining.
|-
|}

ExpEYES/C2/Conductivity-of-ionic-solutions/English - Revision history

Kaushik Datta: Created page with "{| border=1 ||'''Visual Cue''' ||'''Narration''' |- ||'''Slide Number 1''' '''Title Slide''' || Hello everyone. Welcome to this tutorial on '''Conductivity of ionic solution..."