Question

You are presented with a white solid and told that due to careless labeling it is not clear if the substance is silver fluoride, calcium fluoride, or potassium bromide. When you transfer the solid to a beaker and add water, the solid dissolves to give a clear solution. Next a Na2SO4(aq) solution is added and a white precipitate forms. What is the identity of the unknown white solid?

Answer 1

do you know the solubility rules and how to write the possible reactions for the possible compounds with Na2SO4?

Answer 2

http://www.chem.sc.edu/faculty/morgan/resources/solubility/

Answer 3

Not really..

Answer 4

I figured it out thanks.