Answer:
Explanation:
Cu + S = CuS .
4 grams of copper = 4 / 63.5 = .0629
2 grams of sulphur = 2 / 32 = .0625
So .0629 mole of copper reacts with same mole of sulphur
So the reaction is taking place as follows
Cu + S = CuS .
If copper is increased to 6 grams
6 gm of copper = 6 / 63.5 = .0944 moles of copper
sulphur = .0625 moles
ratio of moles of copper and sulphur = .0944 / .0625 = 3 / 2 = 1.5
Another compound may be formed as follows
3 Cu + 2 S = Cu₃ S₂
Compound between copper and sulphur can be formed in many ratios where the ratio of cu and s can vary between .5 to 2 . Hence in this case compound like Cu₃S₂ may be formed.