Sulfuric acid was once produced through the reaction of sulfur trioxide with water. Sulfur trioxide can form through the reaction of sulfur dioxide and oxygen gas. When nitrogen monoxide gas is added to the system, the reaction speeds up significantly because it proceeds through the following steps: First: 2 upper N upper O (g) plus upper O subscript 2 (g) right arrow 2 Upper N upper O subscript 2 (g). Second: 2 upper N upper O subscript 2 (g) plus 2 upper S upper O subscript 2 right arrow 2 Upper N upper o (g) plus 2 upper s upper o subscript 3 (g). Identify the catalyst in this reaction, explain how you know it is the catalyst, and describe how it increases the rate of the reaction.