Practical, summer 2014, chemistry AS, paper 3, variant 1.

[Princess1997]

titration is affected by room temp. and pressure so it can differ

 

[Autumngirl]

If you think your reading is correct but cie compares your readings with the supervisor and gives you marks according to it

Well tough luck for me. This is probably hoping for too much but does CIE have a range for the supervisors value as well?What if the supervisor was wrong and everyone suffered because of him? I'm not blaming the supervisor, just curious to know.

 

[Autumngirl]

i got 28.5

Good to know I'm not the only one then!

 

[omaaaar]

Well tough luck for me. This is probably hoping for too much but does CIE have a range for the supervisors value as well?What if the supervisor was wrong and everyone suffered because of him? I'm not blaming the supervisor, just curious to know.

What I know is that cie just compares the reading with the supervisor and there is a very little chance that the supervisor makes a mistake as he repeats the titration many times