Hydrogen peroxide decomposes into water and oxygen. When a 1g. lump of MnO2 is added to hydrogen peroxide the decomposition is faster and 1g. of MnO2 is still left afterwards. Explain.
2007-02-07 11:19:11 · 2 answers · asked by Anonymous in Science & Mathematics ➔ Chemistry
The MnO2 is not really taking part in the chemical reaction. It is a catalyst. The catalyst provides a nice surface for the reaction to use and go faster, but it does not actually enter into the reaction. It is like the home crowd cheering their team and helping them play harder. The crowd does not really take part in the game, but their support helps the team play better.
2007-02-07 11:25:27 · answer #1 · answered by physandchemteach 7 · 1⤊ 0⤋
the MnO2 is a catalyst all it does is speed up the rate of the decomposition of the hydrogen peroxide. however it doesnt take part in the reaction and thus remains unchanged at the end of the reaction. this accounts for the1g. of MnO2 still left after the decomposition
2007-02-07 11:31:36 · answer #2 · answered by Anonymous · 0⤊ 0⤋