2. Because the yellow color of CrO42- tends to obscure the first appearance of t

2. Because the yellow color of CrO42- tends to obscure the first appearance of the red Ag2CrO4 it is common practice to hold the CrO42- concentration to about 2.5 x 10-3 M. Calculate the relative titration error (neglecting the volume of AgNO3 needed to produce a detectable amount of Ag2CrO4) in the titration of 50.0 mL of 0.0500 M NaCl with 0.1000 M AgNO3.3. The Fajans method is to be used in the routine analysis of solids for their chloride content. It is desired that the volume of standard AgNO3 used in these titrations be numerically equal to the percent Cl- when 0.2500-g samples are used. What should the molarity of the AgNO3 solution be?