People were saying you use lnk where k is the rate constant :/ I used 1/K (K being temperature in Kelvin) for x axis and ln(1/time) for y axis :/ dunno if that's right.
Thank god! I completely messed up the titration graph (didn't label the equivalence points and first vertical section was non existent lol) and the nmr drawing so i was so worried!
what did everyone say for the effect of a slight increase in temperature on the value of total entropy?
You had to draw ln(rate) against 1/T i believe. lnK against 1/T isn't technically wrong, it works, but I don't think thats what the question was asking for. Think about it, you had a question asking which measurements should be taken - the answers to this was rate and temperature. Then they asked how to process the results. If they wanted us to plot ln K against 1/T, 1) they wouldn't have given the equation in terms of ln rate, 2) calculating K from the rate would be too much to ask
Thank god! I completely messed up the titration graph (didn't label the equivalence points and first vertical section was non existent lol) and the nmr drawing so i was so worried!
what did everyone say for the effect of a slight increase in temperature on the value of total entropy?
You had to draw ln(rate) against 1/T i believe. lnK against 1/T isn't technically wrong, it works, but I don't think thats what the question was asking for. Think about it, you had a question asking which measurements should be taken - the answers to this was rate and temperature. Then they asked how to process the results. If they wanted us to plot ln K against 1/T, 1) they wouldn't have given the equation in terms of ln rate, 2) calculating K from the rate would be too much to ask
YEssssssssssssssss ahhaha I hope we're right then *__*!!!
Guys for Unit 5, do we need to know how to produce Chromium (II) ethanoate. It comes up in the revision guide and text book but I've never been taught this...
well wtf how did i manage to **** that up lol I'm illiterate jesus lol i said decreasing temp slightly would make dS surroundings more negative so dS total would be less positive lmao
I doubt we would have to do that! As for why we would need to two indicators, well one would be for the neutralisation of the first proton and one would be for the second proton. Methyl orange for example would be used for the first one, which occurs at a lower pH and then phenolphthalein for the second one
I think it's pretty unfair that when you were given the lnK equation to rearrange you needed to know some A2 maths in order to work with ln. Lost that mark for sure.
You had to draw ln(rate) against 1/T i believe. lnK against 1/T isn't technically wrong, it works, but I don't think thats what the question was asking for. Think about it, you had a question asking which measurements should be taken - the answers to this was rate and temperature. Then they asked how to process the results. If they wanted us to plot ln K against 1/T, 1) they wouldn't have given the equation in terms of ln rate, 2) calculating K from the rate would be too much to ask
I think doing ln (1/time ) on the y axis is ok isnt it as it proprtional to rate . Swear ive seen that in a past paper???