Submission of Proposal under Star College Scheme

Project: 6
POTENTIOMETRY


Aim:
To determine amount of HCl in the given solution potentiometrically. (Using quinhydrone electrode)


Requirement:
Potentiometer, Calomel electrode, Platinum electrode, salt bridge, 0.1 N NaoH, HCl.


Procedure:

1. 
   Dilute given solution to 100 cm³ with distilled water. Pipette out 10cm³ diluted solution
   
2. 
   In a 100cm³beaker. Set up the cell as given
   

SCE II quinhydrone electrodeI Pt

3. 
   Add 0.5 cm³ of 0,1 NaOH from burette, stir the solution well and record emf of the solution. Repeat this till negative emf is obtained.
   
4. 
   Plot E V_S V and E V_S V to determine equivalence point and calculate the amount of HCl in the given solution.
   

Project: 7
POLARIMETER


Aim:
To determine the amount of fructose in the given sample solution.


Requirement:
Polarimeter, Fructose injection / powder, 5M Ammonia, Distilled water.


Procedure:

1. 
   To an accurately measured volume containing (approximately 5.0 g) fructose, add 2 cm³of 0.5 M ammonia and sufficient water to make the volume 100 cm ³. Mix well
   
2. 
   And allow to stand for 30 mins. Determine optical rotarion in a 2 dm tube.The observed rotation in degrees multiplied by 0.5427 represents the weight in gm of Fructose C₆H₁₂O₆ in the volume taken for assay.
   

Project: 8
Synthesis of acetanilide


Aim:
To prepare acetanilide from aniline using Microwave


Requirements:
Aniline, Acetic anhydride, conc. H₂SO₄


Procedure:
Take about 1 cm³ of aniline in a 150 cm³ dry conical flask. Add about 2 cm³ of acetic anhydride and two drops of conc. H₂SO₄. Heat the mixture using a microwave for 1 min. cool and pour the contents in 20 cm³ of ice cold water in a beaker with constant stirring to obtain crystals of acetanilide. After 5 mins. filter the crystals, wash with water, recrystallise with hot water, dry and determine its m.p.