This compound and phosphate rocks are used in a "wet process" to create phosphoric acid.
Older plants use this compound to process ilmenite to produce titanium dioxide. This compound can cause precipitations when used to regenerate SAC resins in ion exchange units for water processing. This compound is used in a three-step process in which it is reacted with iodide to make hydrogen gas from water. This compound is industrially synthesized with a cesium catalyst in the (*) "double absorption" modification of process most commonly used to produce it. This compound and phosphate rocks are used in a "wet process" to create phosphoric acid. In one process, an oleum intermediate is used to synthesize it. That process also includes a step catalyzed by vanadium oxide and is called the contact process. For 10 points, name this strong diprotic acid with formula H2SO4.
Older plants use this compound to process ilmenite to produce titanium dioxide.
sulfuric acid [accept H2SO4 before mention; accept oil of vitriol]