Question

state the methods by which hydrated salts can be made anhydrous​

Answer 1

Answer:

Often, a hydrated salt can be converted into an anhydrous salt (one without water) by strong heating to drive off the water molecules. The mass of the hydrate will differ from the mass of the anhydrous salt by the mass of water that was removed during heating.

Answer 2

Answer:

Salts hydrates have been the most investigated for heat storage purposes at low temperatures. Salt hydrates can be considered alloys of inorganic salts (AB) and water (H2O), resulting in a typical crystalline solid of general formula (AB·xH2O) (Sharma et al., 2009). Their phase change transition can actually be regarded as a dehydration or hydration of the salt, although this process can be assimilated to a melting or a freezing of the compound. Salt hydrates usually melt to either a salt hydrate with fewer moles of water, or to its anhydrous form. During the phase change transition, liquid water released from the hydrated salt dissolves the formed nonhydrated salt molecules.......

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