Please help to check if I my steps are correct: -
For sample weight 1 of 2.5011g,
Amount of benzoyl peroxide in 5mL of solution T = (8.58 mL - 0.80mL) x 12.11 mg/mL = 102.935mg
Amount of benzoyl peroxide in 100mL of solution T = 102.935mg x 20 = 2058.7mg
%w/w benzoyl peroxide = (2058.7/1000)g /2.5011g x100% = 82.3 wt%
Same steps are followed for sample weight 2, then the results are averaged out.
And if the concentration of standardized sodium thiosulphate titrant is not exactly 0.1M ,then we need to multiply by a standardization factor, where standardization factor= (actual concentration of sodium thiosulphate/0.1).
Is my thinking correct?
Thanks.