Question

a residue of............ colour remains in the test tube

Answer 1

HEY'-:-) :-) :-) DEAR--:-) :-) :-) 'YOUR'-:-) ANSWER-:-) :-) :-) :-) :-) :-)




First of all let me say that, when you heat copper sulphate crystals,they loose water of crystallisation. So when they loose water molecule they never remain as crystal. So it is better to call dehydrated copper sulphate.

It's colour changes to original colour of CuSO4CuSO4 that is white.

It looks blue due to crystal formation with water molecules inside. When it looses them it looses the crystal hence turns into white.

Hope that helps.:-) :-) :-) :-) :-) :-) :-) :-)


MARK'-:-) :-) :-) :-) AS BRAINLIEST

Answer 2

Answer:

Please mark me as brainliest