Which of the following best describes the typical chemical composition of a bleach sanitizing solution?

• A. A mixture of ammonia (NH3) and water
• B. A concentrated solution of hydrogen peroxide (H2O2)
• C. A dilute solution of sodium hypochlorite (NaClO) in water
• D. A solution of acetic acid (CH3COOH) in water

Answer: (C)

Verified step by step guidance

1. Understand that a bleach sanitizing solution is commonly used for disinfection and sanitation purposes, especially in household and industrial cleaning.
2. Recall that the active chemical in typical household bleach is sodium hypochlorite (NaClO), which is usually present in a dilute aqueous solution.
3. Recognize that ammonia (NH3) and water is not used as a bleach; ammonia solutions are cleaning agents but not bleaching agents.
4. Note that hydrogen peroxide (H2O2) is a disinfectant and bleaching agent but is not the typical composition of common bleach solutions.
5. Identify that acetic acid (CH3COOH) is vinegar, which is acidic and used for cleaning but does not have bleaching properties like sodium hypochlorite.