Which two chemicals are present in a typical hydrogen peroxide solution?

• A. H2O2 and H2O
• B. H2O and O2
• C. H2O2 and O2
• D. H2O2 and HCl

Answer: (A)

Verified step by step guidance

1. Understand that a typical hydrogen peroxide solution is an aqueous solution, meaning hydrogen peroxide (H2O2) is dissolved in water (H2O).
2. Recognize that pure hydrogen peroxide is rarely used because it is unstable and reactive; it is usually diluted with water to make it safer and more practical for use.
3. Identify the main components of the solution: the solute, which is hydrogen peroxide (H2O2), and the solvent, which is water (H2O).
4. Note that oxygen gas (O2) is not a component of the solution itself but can be released when hydrogen peroxide decomposes.
5. Conclude that the two chemicals present in a typical hydrogen peroxide solution are hydrogen peroxide (H2O2) and water (H2O).