OMB Meeting Book - Jan. 11, 2018

2016.03 (Nov. 2017) - Chlor-02/04 Final Action Review FOR ERP USE ONLY DO NOT DISTRIBUTE

1 = volume of 0.1 mol/l or 0.025 mol/l AgNO 3 solution consumed at titration endpoint (in ml); 5.844 = sodium chloride mass i n μg corresponding to 1 ml of 0.1 mol/l AgNO 3 ; 10 = mass conversion from titer to the concentration of titrant. Or if using a purchased standard grade 0.10 mol/l sodium chloride solution (C. h), use Formula (2): = 0,1× 3 1 (2) where V 3 = volume of purchased standard grade 0.10 mol/l sodium chloride added (in ml); 1 = volume of 0.1 mol/l or 0.025 mol/l AgNO 3 solution consumed at titration endpoint (in ml), Calculate the chloride mass fraction, w cl , in mg/100 g in the sample and report to 3 significant digits, using Formula (3): = 35,45× ×( 2 − 0 )× ×100 (3) where m = the sample mass (in g); c = the certified concentration of silver nitrate titrant (0.1000 mol/l or standardized concentration (Formula 1); V 2 = the volume of AgNO 3 solution consumed at titration endpoint (in ml);

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