Polarography of Molybdenum (VI) at D.M.E. in Different Organic Acids Media

Palarographic behaviour of Mo (VI) at d. m. e. employing different organic acids, mandelic acid, succinic acid, and formic acid-sod formate as supporting electrolytes has been studied. The effects of varia­tion of Hg-pressure, concentration and pH on the waves have been investigated. In 0.1M mandelic acid medium Mo(VI) produces two waves with E\(1\over3\)s-0.26v. and -0.63 v. (vs. SCE), the total height of which was found to vary linearly with Mo(VI) concentration. In succinic acid and formic acid-sod. formate media, an irreversible wave with hall wave potentials about 0.51v. and -48v. respectively was obtained, the height of which in each case does not show proportionality with Mo(VI) concentration. The values of \(1\over2\) id/h\(1\over2\)eff. at different Hg-pressures in all cases show constancy and suggest the occurrence of diffusion controlled waves. The reduction wave in mandelic acid medium appeared to be of analytical importance and hence the effects of the presence of various elements via. W, Fe (III), V, Mn, Cr, Ti(III), Uo++, Te, and camphor on the wave have also been studied