What is the smallest entity of a hydrate (e.g. CuSO4 • 5H2O)? (A formula unit?)

Answer 1

The smallest entity of an hydrate is surely the given formula unit:

#CuSO_4*5H_2O#

Copper sulfate is a white powder. It may be recrystallized from water to give the pentahydrate, which has a truly beautiful blue colour. Macroscopic crystals of the hydrate may be grown, and the formula of this material corresponds to the given #"pentahydrate"#.

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Answer 2

Cameron Andrews

The smallest entity of a hydrate is called a formula unit. It consists of the compound's chemical formula, including both the anhydrous compound and the water molecules associated with it. In the example given, CuSO4 • 5H2O, the formula unit includes one copper sulfate molecule (CuSO4) and five water molecules (H2O).

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.