On adding dilute HCl to CuO powder, the solution formed is blue green. Predict the new compound formed which imparts a blue-green colour to the solution.
When HCl is diluted with copper oxide, the following reaction takes place:
HCl + CuO → CuCl2 + H2O
The new compound formed is copper chloride (CuCl2) which imparts a blue-green colour to the solution. The above reaction is a type of double displacement reaction.