Which disinfectant is a chemical with the formula H2O2?

Hydrogen peroxide is correctly identified with the chemical formula H2O2. It is a powerful oxidizing agent commonly used as a disinfectant due to its ability to kill bacteria, viruses, and fungi. When applied to surfaces or wounds, hydrogen peroxide releases oxygen, which helps to breakdown organic matter and sanitizes effectively.

Other disinfectants mentioned do not match this chemical formula. Alcohol typically refers to ethanol or isopropyl alcohol, neither of which has the formula H2O2. A saline solution is simply a mixture of salt in water and serves primarily in hydration and wound washing, not as a disinfectant. Bleach, primarily sodium hypochlorite, also does not share this chemical composition. Understanding the specific chemical properties and uses of disinfectants like hydrogen peroxide is essential in caregiving practices, especially in maintaining hygiene and preventing infections.