BARIUM ACTIVITY NO.

First take 40 gm of Barium Hydroxide & dissolve it up to 1000 ml Distilled water & keep it for over night.

Take two sample of mercerized & unmerserized fabric which is soaped at 90⁰C, washed with cold water & dry.

Take three Barium No. bottles & add 30 ml of supernated solution of Barium Hydroxide.

Weight approximately 2.0 gm accurately of unmercerize & mercerize fabric & deep it in two different bottles.

Run the blank with the experiment & shake the bottle for 24 hrs.

Now titrate 10 ml of each solution against 0.1 N HCl from burette.

Methyl Red is used as an indicator.

End point is pink to colorless.

Calculation =   Blank (BR) - Mercerize (BR)      x 100
                         Blank (BR) -  Un Mercerize (BR)

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