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define hydrate and anhydrous salt and relate them to why copper hydrate turns from blue to...

define hydrate and anhydrous salt and relate them to why copper hydrate turns from blue to a greyish white.

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Answer #1

A hydrated salt is a salt in which a fixed number of water molecules in the crystall lattice(called water of crystallization) along with the ions.

They are represented in the fomula followed the molecular formula of thesalt , dot number of water molecules.

eg. CuSO4.5H2O

MgSO4.7H2O

An anhydrous salt is the salt which does not have any water of crystallisation or lost it on heating.

eg. CuSO4

NaCl , MgCl2

b) CuSO4.5H2O shows blue color due tot he presence of water moelcules in the crystal lattice.

When it is strongly heated it loses all the water of crystallization to become anhydrous salt which is colorless.

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