Hydrogen peroxide decomposes to form water and oxygen

[PRINCESS NOOR]

hydrogen peroxide decomposes to form water and oxygen. Its a slow rate of reaction and it takes time to decompose. So we faster the rate of reaction by adding manganese oxide which is a catalyst its function is to faster the rate of reaction .

my question is if we doubled the amount of MnO2 does the rate of reaction increase more or not?

 

[chem_tr]

It may be, but there is a limit for catalysts. Indeed, the term "catalyst" indicates that a very small amount is enough to produce a faster reaction, so in my opinion, doubling the catalyst amount will not give the desired result, even "poisoning" may occur. Alternatively, look for another catalyst or a co-catalyst for a synergistic reaction.

 

[ravenprp]

Yes, doubling the amount of MnO2 will increase the rate of reaction even more. This is because a catalyst works by providing an alternative pathway for the reaction to occur, which lowers the activation energy needed for the reaction to take place. With more catalyst present, there are more active sites available for the reactant molecules to bind to and undergo the reaction. This leads to a faster rate of reaction. However, there is a limit to how much a catalyst can increase the rate of reaction, as eventually all of the active sites will be occupied and the rate will plateau. So while doubling the amount of MnO2 will increase the rate of reaction, it may not double it. The exact increase in rate will depend on factors such as the concentration of the reactants and the temperature of the reaction.