Edexcel IAL, Unit 4: Rates, Equilibria and Further Organic Chemistry. 14-Jun-2016

Yes volume on the horizontal and time on the vertical line?

In the nmr one i wrote the structure of butanoic acid but did the peaks and the splitting correct,do you think i'll get any marks since the structure was suppose to be propanoic acid? I did that last question in the last minute and messed up pretty badly. :|

really? But wasn't it a straight line for concentration against time also it's a straight line for zero order, right?

First order i guess as its rate over concentration graph

I was confused as well but when I checked, the rate was changing :/ which is why I didn't have much time left for the NMR question :/

The graph was volume against time,right?

Omg I'm scared Every mark is precious haha

No, it was time against volume

I'm kinda unsure tbh. This and the titration graph kinda baffled me.

yup those were the hard ones

it was rate (1000/t, which is s^-1) against volume (cm^3), therefore it should be first order since it's a straight line
Notice the table the title is 1000 t and unit was s^-1, a slash was missing so i guess that's what they want us to realize and add

Zero order

Hope gbs are descent lol. Good luck for Bio U4 I have S1 tomorrow

but if volume is proportional to concentration, and the gradient is a straight line, shouldn't it be zero order?

it was rate (1000/t, which is s^-1) against volume (cm^3), therefore it should be first order since it's a straight line
Notice the table the title is 1000 t and unit was s^-1, a slash was missing so i guess that's what they want us to realize and add