In blue vitrol, number of water molecules joined by co-ordinate bonds with copper and by hydrogen bond is respectively
(1) 3, 2      (2) 2, 3      (4) 4, 1    (4) 5,0
Could you please explain answer with structure?(Answer is 4, 1)

Dear Student,

In blue vitriol i.e. CuSO4.5H2O, four water molcules are linked to copper ion through coordinate bond while the fifth water molecule is bonded to SO42- ion through hydrogen bond. 

Hence, correct answer is (3) 4,1

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