ACTIVITY - 11
Aim: To test the presence of water of crystallisation in copper sulphate crystals.
Method:
(i) Heat a few crystals of copper sulphate in a dry boiHng tube.
(ii) Note the colour of copper sulphate after heating.
(iii) Observe the water droplets in the boiling tube.
(iv) Add 2-3 drops of water on the sample of copper suiphate obtained after heating.
Now Answer
(i) What do you observe on heating blue copper sulphate crystals?
(ii) Is the blue colour of copper sulphate restored on adding water?
Discussion
Blue coloured copper sulphate crystals heating leave behind white anhydrous copper sulphate and water
droplets are seen in the upper cooler parts of the boiling tube. On adding 2-3 drops of water to the white
residue. blue colour reappears.
Conclusion
Copper sulphate crystals on heating lose water to form white anhydrous copper sulphate which
combines with water to form blue coloured copper sulphate crystals.
COMPILED BY- - S. HABIB
Answers
Answered by
1
U asked the question and answered by URSELF
soo wht was ur question
FOLLOW ME AND MARK AS BRAINLIEST AND CHAT INBOX
Similar questions