# Question #9e3f1

Jul 27, 2017

No. Hydration is the adding of water, hydrogenation is the addition of hydrogen.

#### Explanation:

Hydration example:
Some salts can have water molecules embedded in their crystal structure. Copper sulfate $C u S {O}_{4}$ is white in its non-hydrated (anhydrous) form. If water or water vapour is added it turns into the hydrated form $C u S {O}_{4} \cdot 5 {H}_{2} O$ in which for every coppersulfate 5 water molecules are bound into the crystal grid.

Hydrogenation example:
In the preparation of margarine, oils may be hardened to fats by turning double carbon-carbon bonds into single. This is done by the addition of hydrogen (only one double bond is shown):
$- C H = C H - + {H}_{2} \to - C {H}_{2} - C {H}_{2} -$

Of course there are many more examples of both.