QqMichelle

thanx anyway!~^^ it's a hypothesis,so i guess i'll just try to make something up~~ would it be when the bonds break into 2 H+ and 2 O-, if there's HO-, it only needs to form 1 H-O bond to produce a H2O, and 1 O=O bond to produce O2, but when there's H+, it needs to form 2 H-O bond and 1 O=O bond to produce H2O and O2. so HO- ions favor the reaction,thus high pH increases the rate of reaction.? does it sound reasonable?

how does pH affect the rate of reaction though? especially in the case of decomposing H2O2?

but would it affect the rate of reaction? being neutral prob would make the decomposition spontanous, but it prob doesn't necessarily speed up the reaction. does it?

I really need help on this lab. it's a gr.12 chemistry lab, i chose the topic of how does the pH affect the rate of catalytic decomposition of H2O2, i'm using KI as the catalyst, and adding HCl or NaOH to change the pH. all we have to do is just the planning part, i need help on explaining why and how the pH of the mixture affect the rate of decomposition of H2O2. i know in order to speed up a reaction, you either have to have more collision of the particles to occur, or to have higher energy so that more of the particles would have sufficient energy for the collision to be successful. so how does the change in pH contribute to either of these? or there's other reason? can someone please help me??? please!~ i have to get this done by sunday...2 days away~~T^T