Confused please answer this picture

In which of these cases are the two wave points considered to be in phase with each other?

What is produced from neutralization of an acid and a base? a. hydronium ions b. citric acid c. salt and water

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.