Difference between revisions of "ExpEYES/C2/Conductivity-of-ionic-solutions/English-timed"

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|In this tutorial, we will learnt to:
 
|In this tutorial, we will learnt to:
  
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* Measure '''Conductivity''' and
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Measure '''Conductivity''' and
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Calculate the '''resistance''' of ionic solutions.  
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* Calculate the '''resistance''' of ionic solutions.  
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|-
 
|-
 
|00:15
 
|00:15
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|Here I am using:
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|Here, I am using:
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* '''ExpEYES''' version '''3.1.0'''
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'''ExpEYES''' version 3.1.0
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* '''Ubuntu Linux OS''' version '''14.04'''
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'''Ubuntu Linux OS''' version 14.04
  
 
|-
 
|-
 
|00:23
 
|00:23
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|To follow this tutorial, you should be familiar with '''ExpEYES''' Junior interface.
+
|To follow this tutorial, you should be familiar with '''ExpEYES Junior''' interface.
 
If not, for relevant tutorials, please visit our website.
 
If not, for relevant tutorials, please visit our website.
  
 
|-
 
|-
 
|00:35
 
|00:35
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|Let's first define conductivity of a solution.
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|Let's first define '''conductivity''' of a solution.
  
 
|-
 
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|01:08
 
|01:08
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|'''10K resistor''' is connected between '''A2''' and '''GND'''. This is the circuit diagram.
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|A '''10K resistor''' is connected between '''A2''' and '''GND'''. This is the circuit diagram.
  
 
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|-
 
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|01:28
 
|01:28
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|Click on '''A2''', drag to '''CH2'''.
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|Click on '''A2''' and drag to '''CH2'''.
 
'''A2''' is assigned to '''CH2'''.
 
'''A2''' is assigned to '''CH2'''.
  
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|-
 
|-
 
|01:43
 
|01:43
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|Black trace is the original sine wave. Red trace is conductivity of tap water.
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|Black trace is the original '''sine''' wave. Red trace is '''conductivity''' of tap water.
  
 
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|02:15
 
|02:15
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|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.
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|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.
  
 
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|02:34
 
|02:34
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|On the '''Plot window''' we can see the conductivity curve.
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|On the '''Plot window''' we can see the '''conductivity curve'''.
  
 
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|02:42
 
|02:42
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|Increased conductivity is due to copper and sulphate ions present in the solution.
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|Increased conductivity is due to '''copper''' and '''sulphate''' ions present in the solution.
  
 
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|03:41
 
|03:41
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|We will measure conductivity of dilute Potassium hydroxide solution. A few drops of dilute Potassium hydroxide solution are added to tap water.
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|We will measure conductivity of dilute '''Potassium hydroxide''' solution. A few drops of dilute Potassium hydroxide solution are added to tap water.
  
 
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|04:18
 
|04:18
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|Using the voltage values we have calculated the resistance of ionic solutions and tabulated the results.
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|Using the voltage values we have calculated the resistance of '''ionic''' solutions and tabulated the results.
  
 
|-
 
|-
 
|04:27
 
|04:27
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|Resistance value for tap water is '''7.7 KOhm'''.
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|Resistance value for tap water is '''7.7 KOhm''' (kilo ohm).
 
Resistance value for copper sulphate solution is '''1.2 KOhm'''.
 
Resistance value for copper sulphate solution is '''1.2 KOhm'''.
  
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|04:57
 
|04:57
 
|In this tutorial, we have learnt to:
 
|In this tutorial, we have learnt to:
−
* Measure Conductivity and
+
Measure Conductivity and Calculate the '''resistance''' of '''ionic''' solutions.  
−
* Calculate the resistance of ionic solutions.  
+
  
 
|-
 
|-
 
|05:06
 
|05:06
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|As an assignment,
+
|As an assignment,Using sodium hydroxide, acetic acid and sodium chloride solutions measure conductivity and calculate the resistance of ionic solutions.
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* Using sodium hydroxide, acetic acid and sodium chloride solutions, measure conductivity and  
+
−
* Calculate the resistance of ionic solutions.
+
  
 
|-
 
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|05:26
 
|05:26
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|We conduct workshops using Spoken Tutorials  and give certificates. Please contact us.
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|We conduct workshops using '''Spoken Tutorials''' and give certificates. Please contact us.
  
 
|-
 
|-
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|05:39
 
|05:39
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|This tutorial is contributed by  Kaushik Datta and Madhuri Ganapathi. Thank you for joining.
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|This tutorial is contributed by  Kaushik Datta and Madhuri Ganapathi.Thank you for joining.
  
 
|}
 
|}

Latest revision as of 17:06, 27 March 2017

Time Narration
00:01 Hello everyone. Welcome to this tutorial on Conductivity of ionic solutions.
00:07 In this tutorial, we will learnt to:

Measure Conductivity and Calculate the resistance of ionic solutions.

00:15 Here, I am using:

ExpEYES version 3.1.0 Ubuntu Linux OS version 14.04

00:23 To follow this tutorial, you should be familiar with ExpEYES Junior interface.

If not, for relevant tutorials, please visit our website.

00:35 Let's first define conductivity of a solution.
00:38 Conductivity of a solution is a measure of its ability to conduct electricity.
00:44 Conductivity of water is directly related to the concentration of ions dissolved in it.
00:51 Now we will demonstrate conductivity of tap water.
00:56 I will explain the circuit connections. A1 is connected to SINE.
01:02 Wires from SINE and A2 are dipped in glass tumbler containing tap water.
01:08 A 10K resistor is connected between A2 and GND. This is the circuit diagram.
01:16 Let's see the result on the Plot window.
01:20 On the Plot window, click on A1 and drag to CH1. A1 is assigned to CH1.
01:28 Click on A2 and drag to CH2.

A2 is assigned to CH2.

01:35 Move the mSec/div slider to adjust the waves. Two sine waves are generated.
01:43 Black trace is the original sine wave. Red trace is conductivity of tap water.
01:50 Click on CH1 and drag to FIT. Click on CH2 and drag to FIT.
01:56 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.
02:08 Right click on CH1 to see voltages and Phase difference in degree.
02:15 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.
02:27 In the same connection, wires from SINE and A2 are dipped in copper sulphate solution.
02:34 On the Plot window we can see the conductivity curve.
02:38 Red trace is conductivity of copper sulphate solution.
02:42 Increased conductivity is due to copper and sulphate ions present in the solution.
02:48 Observe the voltage and frequency values on the right.
02:52 Right click on CH1 to see voltages and Phase difference values.
02:59 Now, we will measure conductivity of dilute sulphuric acid solution. A few drops of dilute sulphuric acid are added to water.
03:09 Wires are dipped in sulphuric acid solution. Let's see the result on the Plot window.
03:17 Observe that black and red traces are almost coinciding with each other.
03:23 Conductivity of tap water has increased on adding a few drops of dilute sulphuric acid.
03:30 Observe the voltage and frequency values on the right.
03:34 Right click on CH1 to see voltages and Phase difference in degree.
03:41 We will measure conductivity of dilute Potassium hydroxide solution. A few drops of dilute Potassium hydroxide solution are added to tap water.
03:52 We can see that black and red traces are almost coinciding with each other.
03:58 Notice the increased conductivity of tap water on adding a few drops of Potassium hydroxide solution.
04:05 Observe the voltage and frequency values on the right side of the window.
04:11 Right click on CH1 to see voltages and Phase difference in degree.
04:18 Using the voltage values we have calculated the resistance of ionic solutions and tabulated the results.
04:27 Resistance value for tap water is 7.7 KOhm (kilo ohm).

Resistance value for copper sulphate solution is 1.2 KOhm.

04:38 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.

04:55 Let's summarize.
04:57 In this tutorial, we have learnt to:

Measure Conductivity and Calculate the resistance of ionic solutions.

05:06 As an assignment,Using sodium hydroxide, acetic acid and sodium chloride solutions measure conductivity and calculate the resistance of ionic solutions.
05:18 This video summarizes the Spoken Tutorial project. If you do not have good bandwidth, you can download and watch it.
05:26 We conduct workshops using Spoken Tutorials and give certificates. Please contact us.
05:32 The Spoken Tutorial Project is funded by NMEICT, MHRD Government of India.
05:39 This tutorial is contributed by Kaushik Datta and Madhuri Ganapathi.Thank you for joining.

Contributors and Content Editors

Pratik kamble, Sandhya.np14

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