I was given a small amount of Copper Chloride. When I brought my spatula(dirty ofcourse) the salt turned slightly green. Also when preparing the Sodium extract, I added 1 part CuCl<sub>2</sub> and 3 parts NaCO<sub>3</sub> and 3/4ths water. I stirred it slightly with the spatula, it turned black and my extract got prepared much before the others. I want to know what was in the spatula that made the extract production quicker coz. during my exams I could probably use it and finish it quickly. Also the china dish which had my extract became dirty so the teacher asked me to use dil. HCL to clean it. I put a little bit and like magic the dirt went away. I was so amazed. What is the equation of the reaction that happened? Why doesnt anyone use HCL for cleaning the kitchen utensils?