Precipitation of silver molybdate from homogeneous solution by use of diamminesilver(I) reagent

Abstract

An investigation has been carried out on the application of diammine-silver(I) reagent to the precipitation of molybdate. Addition of ammonia solution to a silver salt results in the formation of the complex diammine-silver(I), which when heated gradually decomposes to give silver ions in solution and ammonia, which is volatilised slowly, with a corresponding decrease in pH. The liberated silver ions react with molybdate to form a dense precipitate of silver molybdate.