Formation of Silver Molybdates: an Electrometric Study

Shiva Prasad¹, Andre L. F. Brito¹, Ana C. S. Muniz¹ and Valderi D. Leite²

¹Department of Chemical Engineering, Center of Science and Technology, UFPB-Campus II, Cx. Postal 10108, CEP 58109-970, Campina Grande, PB (Brazil) ²Department of Chemistry, CCT, UEPB, 58109-000 Campina Grande, PB (Brazil)

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ABSTRACT:

The formation of silver molybdates obtained by interaction of silver nitrate and sodium molybdate at specific pH levels 7.8, 5.5 and 4.1 have been studied by electrometric techniques involving pH and conductometric tirtrations. The well-defined inflections and breaks in titration curves provide cogent evidence for the formation of silver normal -Ag2O. MoO3 para-3 Ag2O. 7 MoO3 and octa 2Ag2O.8MoO3 molybdates in the vicinity of pH 5.9, 4.6 and 4.0, respectively. Analytical investigations on the precipitates of silver molybdates have also been carried out, which supports the electrometric results.

KEYWORDS:

Silver molybdates Electrometric techniques.