When sulfur reacts with water, it undergoes a hydrolysis reaction, which means that the water molecule breaks apart and its components (hydrogen and oxygen) react with the sulfur. The specific reaction that takes place is:

S + 2H2O → H2S + SO2

In this reaction, the sulfur (S) reacts with two molecules of water (H2O) to produce hydrogen sulfide gas (H2S) and sulfur dioxide gas (SO2). The reaction is exothermic, meaning that it releases heat and energy.

It's important to note that the reaction between sulfur and water is typically slow at room temperature. However, the reaction rate can be significantly increased by heating the reactants or by adding a catalyst, such as an acid or a metal salt.