There are four water molecules are loosely bonded to each copper sulfate molecule in the hydrate lab .
For copper (II) sulfate tetrahydrate, it would be written [tex]CuSO_{4} .4H_{2} O[/tex] the “•” indicates that 4 water molecules are loosely bonded to the copper (II) sulfate .
Divide the mass of the water lost by the mass of hydrate and multiply by 100. The theoretical (actual) percent hydration (percent water) can be calculated from the formula of the hydrate by dividing the mass of water in one mole of the hydrate by the molar mass of the hydrate and multiplying by 100.
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