Metal sulfates are chemical compounds formed by the reaction of metals with sulfuric acid. They consist of metal cations and sulfate anions (SO4^2-). Common examples include copper sulfate, zinc sulfate, and aluminum sulfate. These compounds are often used in various industries, including agriculture, water treatment, and manufacturing. Metal sulfates are typically soluble in water, making them useful for applications such as fertilizers and chemical processes. They can also play a role in the production of pigments and in the treatment of wastewater. Their properties vary depending on the specific metal involved in the compound.