Practical Exam Model:

Experiment : Spectrometric Determination of Pindolol Solution.

Stock: Conc. 0.005 gm %

λ max: 257 nm

Procedure:

1- In a series of 100 ml measuring flask, Prepare a serial dilution of 5, 10, 15, 20, 25 mls of the stock. Complete to the mark with distilled water, Shake well.

2- Using the appropriate blank, measure the absorbance of the above prepared solution and unknown at the given λ max ( 257 nm ).

3- Plot the calibration curve ( conc. in gm % ).

 

Results to submit:

1- The unknown conc. in gm %.

2- The absorptivity and molar absorptivity.