382 DIY Science: Illustrated Guide to Home Chemistry Experiments
RQEWEvI UESTIOnS
q 1 : What compound forms the powder-blue precipitate when you add sodium hydroxide solution to the copper sulfate solution?
q: 2 What compound produces the intense blue color when the powder-blue precipitate is dissolved in excess aqueous ammonia?
q: 3 Would you expect the solid rayon you produced to be soluble or insoluble in a solution of tetraamminecopper(II) hydroxide? Why?