Just a note that on Q3 (ii) on reaction quotient. This is AHL only and not SL. Noted was that the pdf version of the test that we can download did remove this part but its still here on the digital online version. Just something I noticed. I have...
Short-answer questions: R2.3 The extent of chemical change - EquilibriumMani, To determine the order of the reaction with respect to bisulfite, the iodate concentration and all the other variables must be kept constant and the changes made to the bisulfite ion concentration must always be so that it remains the limiting...
R2.2 (AHL) Rate expression & reaction mechanismThank you, yes they have explained well the iodate part. What I am wondering is, will changing the volume/conc of a limiting reagent affect the rate regardless of the order.
R2.2 (AHL) Rate expression & reaction mechanismHello Mani,For an excellent account of the explanation and the teaching and learning behind this iodine clock experiment which will explain your questions see this...
R2.2 (AHL) Rate expression & reaction mechanismWe have data from class, that shows doubling the conc of metabisulphite, doubled the rate. Is it fair to state first order?
R2.2 (AHL) Rate expression & reaction mechanismHello, In a clock reaction between iodate and metabisulphite ions, if the metabisulphite ions are the limiting reagent - how do we fairly find the order?
R2.2 (AHL) Rate expression & reaction mechanismJust a observation/comment. The previous syllabus did a much better of of defining terms in the syllabus, for instance the old syllabus stated in understandings: "Average bond enthalpy is the energy needed to break one mol of a bond...
R1.2 Energy cycles in reactionsAngie, If you want to give them a paper copy they can do for an exam without any access to the answers just use the "Print this page" button on the drop down menu on the right of this screen. Hope that helps.
HL Practice Paper 1 (Section A) (1)Ok that makes sense but I was hoping to use your questions for part of my course final since my students have access to all the released tests on another site. Then I was going to allow access on your site after the fact so they could learn...
HL Practice Paper 1 (Section A) (1)
Mani
Yes, thank you. I agree and feel relieved that I gave correct instructions to my bunch!
R2.2 (AHL) Rate expression & reaction mechanism