A common demonstration in chemistry courses involves adding

Last updated: 7/31/2022

A common demonstration in chemistry courses involves adding a tiny speck of manganese (IV) oxide to a concentrated hydrogen peroxide, H₂O2, solution. Hydrogen peroxide is unstable, and it decomposes quite spectacularly under these conditions to produce oxygen gas and steam (water vapor). Manganese (IV) oxide is a catalyst for the decomposition of hydrogen peroxide and is not consumed in the reaction. Choose the balanced equation for the decomposition reaction of hydrogen peroxide. H₂O₂ (aq) → 3H₂O(g) + O₂(g) 2H₂O₂ (aq) → 3H₂O(g) +20₂ (9) 2H₂O₂ (aq) → 2H₂O(g) + O₂(g) H,Oz(aq) → H_O(g)+Oz(g)