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Procedure:-

· 1-5g of sample is taken in a polenske flask.

· 2-20g glycerol and 2ml conc. NaOH (50%) is added to it.

· 3-It is then heated over flame until clear solution is obtained.

· 4-It is allowed to cool and 90ml boiling distilled water is added.

· 5-4-5 glass beads and 50ml dil. Sulphuric Acid is added to it.

· 6-Distillation is carried out for 18-21 minutes and 110ml distillate is collected.

· 7-It is then cooled for 10 minutes at 15C.

· 8-It is titrated with N/10 NaOH.

Formula used: - R.M Value= (A- B) x N x 11 or (A- B) x 1.1

Where A= Volume in ml of Standard NaOH solution.

B= Volume in ml of Standard NaOH solution for blank.

N= Normality of Standard NaOH solution

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