Question

A reddish-brown vessel develops a brown coloured solid X when kept open in air for longtime. When

reacted with dilute sulphuric acid, it forms a blue coloured solution along with brisk effervescence

due to colourless and odorless gas Z.X decomposes to form black coloured oxide Y of a reddish

brown metal along with gas Z. Identify X,Y and Z​

Answer 1

Answer:

copper slphode oxygen and h2so4