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Adsorption Isotherm
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Materials Required:

 

  1. Burette
  2. Conical Flask
  3. Magnetic Stirrer
  4. Burette Stand

 

Reagents:

 

  1. KMnO4
  2. Charcoal
  3. Oxalic acid
  4. Water

 

Procedure:

 

   1. Select the titrant.

 

   2. Select the titrate.

 

   3. Choose the volume of water and oxalic acid.

 

   4. Click the start button.

 

   5. Note down the end point.

 

   6. Enter the value in the excel sheet.

 

   7. Corresponding graphs of Langmuir and Freudlich adsorption isotherm are obtained. 

 

 

 

Observations and Calculations:

 

No. Normality Volume Ce=(V2*N2)/V1  Ci  X=Ci-Ce  X/m      log Ce  
log(X/m) Ce/(X/m)
KMnO4, N2 H2C2O4 Charcoal, m H2C2O4 Water Titrate V1 in mL KMnO4,V2 in mL
1 0.1 0.5 2 50 0 10                
2 0.1 0.5 2 40 10 10                
3 0.1 0.5 2 30 20 10                
4 0.1 0.5 2 20 30 10                
5 0.1 0.5 2 10 40 10                

 

Results:

 

  1. Freundlich Adsorption isotherm is verified.
  2. Langmuir Adsorption isotherm is verified.
  3. The value of constant «math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mi»n«/mi»«/math» =.............................
  4. The value of constant «math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mi»k«/mi»«/math»=................................
  5. The value of constant «math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mi»a«/mi»«/math»=.............................
  6. The value of constant «math xmlns=¨http://www.w3.org/1998/Math/MathML¨»«mi»b«/mi»«/math»=..............................

 

Points to Remember while Performing the Experiment in a Real Laboratory:

 

 

  1. Always wear lab coat and gloves when you are in the lab. When you enter the lab, switch on the exhaust fan and make sure that all the chemicals and reagents required for the experiment are available. If they are not available, prepare the reagents using the components for reagent preparation.
  2. Make sure to clean all your working apparatus with chromic acid and distilled water and ensure that all the apparatus are free from water droplets while performing the experiment.
  3. Make sure to calibrate the electronic weigh balance before taking the measurements.
  4. Clean all glassware with soap and distilled water. Once the experiment is completed recap the reagent bottles. Switch off the light, and exhaust fan before leaving the lab.
  5. Discard the used gloves in a waste bin.

 

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