What is a substance that has a pH of 13 and is considered a corrosive waste?

A substance with a pH of 13 is highly alkaline and falls into the category of corrosive wastes. Potassium Hydroxide, which is the correct answer, is a strong base with a high pH value, often used in various industrial applications, including cleaning and chemical manufacturing. Because it can cause significant damage to living tissue and materials upon contact, it is classified as corrosive.

The other substances listed do not have the same corrosive properties at a pH of 13. Sodium Bicarbonate, while basic, has a much lower pH around 8.4 and is not classified as corrosive. Calcium Carbonate is neutral to slightly alkaline and also does not qualify as corrosive waste. Ammonium Nitrate is neutral and while it can be harmful under certain conditions, it is not corrosive. Thus, among the choices, Potassium Hydroxide is the only one that meets the criteria of being a corrosive waste at a pH of 13.