Answer to Question #164481 in General Chemistry for abd

Question

A substance dissolves in water to form a colourless solution. This solution reacts with aqueous silver nitrate in the presence of dilute nitric acid to give a yellow precipitate

what is the possible identity of the substance?

A calcium iodide

B copper(ii) chloride

C Iron(ii) iodide

D sodium chloride

Answer 1

The substance is most likely to be Calcium Iodide. The formation of a colourless solution in water shows the absence of transition metals (Fe and Cu). While the test confirms the presence of Iodine.