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

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|-
 
|-
 
|00:01
 
|00:01
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| Hello everyone.Welcome to this tutorial on '''Conductivity of ionic solutions'''.
+
| Hello everyone. Welcome to this tutorial on '''Conductivity of ionic solutions'''.
  
 
|-
 
|-
 
|00:07
 
|00:07
−
|In this tutorial we will learnt to:
+
|In this tutorial, we will learnt to:
  
−
* Measure Conductivity and
+
Measure '''Conductivity''' and
−
 
+
Calculate the '''resistance''' of ionic solutions.  
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*Calculate the resistance of ionic solutions.  
+
  
 
|-
 
|-
 
|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
−
|To follow this tutorial, you should be familiar with:
+
|To follow this tutorial, you should be familiar with '''ExpEYES Junior''' interface.
−
 
+
−
'''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
−
|Let's first define conductivity of a solution.
+
|Let's first define '''conductivity''' of a solution.
  
 
|-
 
|-
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|-
 
|-
 
|00:56
 
|00:56
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|I will explain the circuit connections.'''A1''' is connected to '''SINE'''.
+
|I will explain the '''circuit''' connections. '''A1''' is connected to '''SINE'''.
  
 
|-
 
|-
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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.
+
|A '''10K resistor''' is connected between '''A2''' and '''GND'''. This is the circuit diagram.
  
 
|-
 
|-
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|-
 
|-
 
|01:20
 
|01:20
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|On the '''Plot window''', click on '''A1''' and drag to '''CH1'''.'''A1''' is assigned to '''CH1'''.
+
|On the '''Plot window''', click on '''A1''' and drag to '''CH1'''. '''A1''' is assigned to '''CH1'''.
  
 
|-
 
|-
 
|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'''.
  
 
|-
 
|-
 
|01:35
 
|01:35
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|Move the '''mSec/div''' slider to adjust the waves.Two sine waves are generated.
+
|Move the '''mSec/div''' slider to adjust the waves. Two '''sine''' waves are generated.
  
 
|-
 
|-
 
|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.
  
 
|-
 
|-
 
|01:50
 
|01:50
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|Click on '''CH1''' and drag to '''FIT'''.Click on '''CH2''' and drag to '''FIT'''.
+
|Click on '''CH1''' and drag to '''FIT'''. Click on '''CH2''' and drag to '''FIT'''.
  
 
|-
 
|-
 
|01:56
 
|01:56
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|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.
+
|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
 
|02:08
−
|Right click on '''CH1''' to see voltages and Phase difference in degree.
+
|Right click on '''CH1''' to see voltages and '''Phase''' difference in degree.
  
 
|-
 
|-
 
|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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|-
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|-
 
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|02:42
 
|02:42
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|Increased conductivity of 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.
  
 
|-
 
|-
 
|02:48
 
|02:48
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|Observe the voltage and frequency values on the right.
+
|Observe the '''voltage''' and '''frequency''' values on the right.
  
 
|-
 
|-
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|-
 
|-
 
|02:59
 
|02:59
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|Now we will 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.
  
 
|-
 
|-
 
|03:09
 
|03:09
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|Wires are dipped in sulphuric acid solution.Let's see the result on the Plot window.  
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|Wires are dipped in sulphuric acid solution. Let's see the result on the '''Plot window.'''
 
 
 
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|-
 
|-
 
|03:23
 
|03:23
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|Conductivity of tap water has increased: on adding a few drops of dilute sulphuric acid.
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|Conductivity of tap water has increased on adding a few drops of dilute sulphuric acid.
  
 
|-
 
|-
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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.
+
|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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|-
 
|-
 
|03:58
 
|03:58
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|Notice the increased conductivity of:
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|Notice the increased conductivity of tap water on adding a few drops of Potassium hydroxide solution.
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tap water on adding a few drops of Potassium hydroxide solution.
+
  
 
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|-
 
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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'''
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Resistance value for copper sulphate solution is '''1.2 KOhm'''.
  
 
|-
 
|-
 
|04:38
 
|04:38
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| sulphuric acid solution is '''0.17 KOhm''' and * potassium hydroxide solution is '''0.14 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.
 
Notice that resistance values decreased with the increase in ionic concentration.
  
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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
−
|As an assignment,
+
|As an assignment,Using sodium hydroxide, acetic acid and sodium chloride solutions measure conductivity and calculate the resistance of ionic solutions.
−
* Using sodium hydroxide, Acetic acid and sodium chloride solutions,
+
−
* Measure conductivity and  
+
−
* Calculate the resistance of ionic solutions.
+
  
 
|-
 
|-
 
|05:18
 
|05:18
−
|This video summarises the Spoken Tutorial project.If you do not have good bandwidth, you can download and watch it.
+
|This video summarizes the Spoken Tutorial project. If you do not have good bandwidth, you can download and watch it.
  
 
|-
 
|-
 
|05:26
 
|05:26
−
|We conduct workshops using Spoken Tutorials  and give certificates. Please contact us.
+
|We conduct workshops using '''Spoken Tutorials''' and give certificates. Please contact us.
  
 
|-
 
|-
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|-
 
|-
 
|05:39
 
|05:39
−
|This tutorial is contributed by  Kaushik Datta and Madhuri Ganapathi. Thank you for joining.
+
|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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