Hydrogen peroxide is a safe, inexpensive, and effective way to brighten fabrics and remove stains. Many color-safe bleaches feature hydrogen peroxide, including my homemade oxygen bleach.

Catalysis of the decomposition of hydrogen peroxide is demonstrated in a foil-covered florence flask or fancy bottle. A packet of manganese dioxide catalyst is suspended by a thread inside the neck of ...

60C works very well. Add 30mL of 30% hydrogen peroxide with stirring. Point out that the reaction is proceeding very slowly if at all (no gas bubbles visible). Pour 50mL of 0.4M cobalt chloride ...