Heating Copper & Sulfur - Does Mass Change

[@amrendramishra545]

Nice

[@ramyathota4681]

great..keep it up

[@StevenSchoolAlchemy]

Nice.

[@amrikbhindra]

9

[@sidhudhawan8504]

How To Make Red Copper Sulfide.??

[@chempatenaude]

The reaction is between yellow sulphur powder and reddish brown copper metal. The two are mixed in a test tube and heated. One of the first things that happens is that the yellow sulphur powder changes form. It becomes a dark red liquid form of sulfur. Just as there are different forms of carbon like graphite and diamond, there are different forms of sulfur. We started with the yellow solid form and after heating it became this red form of liquid sulfur. I believe that the yellow solid form of sulfur is made of rings of sulfur atoms bonded together with eight atoms per ring. Heating causes the rings to break open and this creates the red form of liquid sulfur. Then as we continue to heat, the sulfur reacted with the copper and produced black copper sulfide solid. The black copper sulfide was visible when we stopped heating. It was covering the original copper metal.

[@sidhudhawan8504]

@@chempatenaude This Is Dark Red Powder.After process.???

[@sidhudhawan8504]

@@chempatenaude I want Dark Red Brick Red...Red Copper Sulphide... How it's possible.???

[@sidhudhawan8504]

Any Vedio link This Related.??

[@chempatenaude]

@@sidhudhawan8504 The dark red is sulfur. Not copper sulfide. Copper sulfide is a black solid. If you put yellow sulphur powder in a test tube and heat it with a burner (in a fume hood for ventilation safety), it will turn into dark red liquid sulfur. When you let that cool, it turns into a rubbery solid sulphur which is still dark red. I believe that over very very long period of time, that red rubbery solid sulphur will revert to the yellow sulphur that you started with.

[@sidhudhawan8504]

This Is Red Copper Sulfate.????

[@Chemixtrea]

CuS or copper(II)sulphide is an ionic compound (metal + non-metal) and the Cu donates two electrons to the sulphur. The electron charge on the Cu is 2+ and on the S it is 2- so that the S atom now has 8 valence electrons. S is also the most electronegative of the two.