A 50 ml 1.92% (w/v) solution of a metal ion Mnt (atomic weight = 60) was treated with 5.332g hydrazinehydrate (90% pure) and the mixture was saturated with CO2 gas. During this process entire metal gets precipitated as a complex [M(H,N NHCO0),). The complex was filtered off and the filtrate was titrated with M KIO, in the presence of conc. HCl according to the following equation N2H4 + IO, + 2Cl- ICI + 3H2 The volume of KIO, solution naadad for the ond noint tn arrive wae