How are amounts of hydrogen and oxygen gas made from the electrolytic decomposition of water related to the chemical formula of water?

The most common form of matter in the universe

When hydrogen peroxide (h2o2) is added to potassium iodide (ki) solution, the hydrogen peroxide decomposes into water (h2o) and oxygen (o2). the chemical equation for the decomposition reaction is: 2h2o2—> 2h2o + o2. what is the role of the potassium iodide in this reaction? a. reactant. b. product. c. precipitate. d. catalyst.

A) equal lines b) parallel lines c) perpendicular lines d) none of the above