Answer to Question #182311 in General Chemistry for Murad

Question

Volhard method In an experiment of determination of KBr (g%) by volhard method In a flask; - 15ml KBr was taken - 25 ml 0.05M AgNO3 - 1 ml nitric acid - 1 ml ferric alum indicator Then titration with 0.05M KSCN was done - The end point was =15 ml • Calculate the mass of KBr in g%

Answer 1

Ag⁺ + Cl^– ⇾ AgCl

Ag⁺ + SCN^– ⇾ AgSCN

SCN^– + Fe³⁺ ⇾ FeSCN

15×100=15%