How will you prepare crystal of copper sulphate?
Answers
Answer:
Take about 25-30 ml of water and add to it small quantities of the powdered crude copper sulphate. Stir well to dissolve it. Make several additions of the powdered sample till a little of it remains undissolved even if it is stirred for sometime. Now add 2-3 ml of dilute sulphuric acid to make the solution clear.
Answer:
Step-by-step explanation:
1. dissolve copper in concentrated H2SO4
Cu(s)+2 H2SO4(l)----->CuSO4(l)+2 H2O(l)+SO2(g)
perform in fume cupboard since corrosive SO2 gas is released
2.preform crystallization: pour solution onto evaporating dish and let water dries out
3.CuSO4 crystal forms
remake: for step 2 you can warm the solution to make water evaporate faster, however the crystal formed will be smaller.
If you have CuSO4 powder you can simply dissolve it in distilled water and perform step 2