Here's a breakdown:

* Ketal: A ketal is a functional group where a ketone has reacted with two equivalents of an alcohol. The carbon atom that was part of the ketone group is now bonded to two alkoxy groups (OR).

* Hydrolysis: Hydrolysis is a chemical reaction where water is used to break down a molecule. In the case of a ketal, the water molecule reacts with the ketal, breaking the bonds between the carbon and the alkoxy groups.

* Products: The products of hydrolysis are the original ketone and two molecules of the alcohol that was used to form the ketal.

Example:

The hydrolysis of a ketal derived from acetone and methanol produces acetone and two molecules of methanol.

```

[CH3-C(OCH3)2-CH3] + H2O → [CH3-C(=O)-CH3] + 2 CH3OH

```

Note: The hydrolysis of a ketal is typically catalyzed by an acid, such as hydrochloric acid (HCl). This is because the acid helps to protonate the oxygen atoms in the ketal, making them more susceptible to attack by water.