The name of the acid that is formed when hydrogen sulfide is dissolved in water would be hydrosulfuric acid. It has the same chemical formula as hydrogen sulfide which is H2S. It is classified as a weak acid which partially ionizes into hydrogen sulfide ions and hydronium ions. It is a very toxic substance and is distinguished by its strong odor which is compared to an egg that is rotting. It can be found in high concentrations in the crust of the Earth, in volcanic emissions and in many fossil fuels. To produce this acid, the gas hydrogen sulfide is dissolved into the water. However, this acid is not produced since it does not have any industrial application.