Which of the following substances is a peroxide?

Assessment: WAEC SSCE - Chemistry - 1993 (Objective) Subject: Chemistry

Question 1 Report

Which of the following substances is a peroxide?
Answer Details
The substance that is a peroxide is Na2O2. A peroxide is a compound that contains an oxygen-oxygen single bond, also known as a peroxide linkage. Na2O2 is a peroxide because it contains the peroxide linkage between the two oxygen atoms in the formula. In contrast, CuO, Pb3O4, Fe2O3, and AI2O3 do not contain a peroxide linkage and are not peroxides. In summary, Na2O2 is the only substance in the given options that is a peroxide because it contains an oxygen-oxygen single bond, which is a defining characteristic of peroxides.
Read lesson note on Acids, Bases And Salts (JAMB)
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