Edexcel A2 Chemistry Unit 5 ~ 22nd January 2013

Oh so I was right wahoooo that makes me feel better, that's what I did for the mechanism but because it said unstable I wasn't sure!! The question about why the different type of molecule was less react than phenol what did you put? It was a 4 marker


Posted from TSR Mobile

Do you always need to get above 240 ums in a2 and as to get an A or does scaling take place depending on hardness of exam . I am an international student and my tutor says you always need above 240 ums in each a2 and as! I am so confused somebody please put me out of misery!!

Any predictions on grade boundaries? I need to get a B on this paper I don't think I've done it! The multiple choice question was about amount of grams of something? And it had like 342 or 178 or something else anyone know the answer?


Posted from TSR Mobile

Something like 98%, it was a trick question, because you had to work out the moles of iodine that reacted.

Remember the sodium thiosulfate only reacted with the remaining iodine once the reaction between absorbic acid and iodine had finished. Iodine was in excess remember.

..

Wow, this is probably like the only q I got right in the whole paper . I am not going to read the rest of the posts, becasue I am sure I will see I made a ****load of mistakes. What was your opinion of the paper? And dont say easy lol.

Only hard parts were the copper question. Apart from that, the rest of the paper was the usual difficulty of recent unit 5 papers.

No, they add up your ums from A2 and AS.

For just AS only, 240ums is needed for an A.
For just A2 only, 240ums is needed for an A.

They add up your ums, so you need 480 ums in total from the entire A-level to get your A overall.

The marks get scaled to ums, but ums boundaries always stay the same. It's the grade boundaries that can change from each exam (depending on how easy or hard it is)

That was 22 marks. So what do you think about grade boundaries? You think you got 103?

If the grade boundaries are lower than usual, I reckon that it will be in the 100's, that's only IF the grade boundaries are lower.

June was 67 for an A. This will be lower imo. Well, hope you get your A James, good luck.

I cant believe that paper. The hardest one imo, out of all the new spec ones. How was it for you?

What did you guys write about the very last question where they asked why the cis form of the molecule forms that particular molecule in the previous question and not a polymer chain ..? Was it something to do about the kinks and strains on bonds making them unable to form chains.. cause that's my guess..

How did you find the rest of the paper though?

I must admit, I got put off by the new font in the questions, did anyone notice that too?

Something like 98%, it was a trick question, because you had to work out the moles of iodine that reacted.

Remember the sodium thiosulfate only reacted with the remaining iodine once the reaction between absorbic acid and iodine had finished. Iodine was in excess remember.

I got like 31% but you should get most of marks for method I hope but I didn't get it right!


Posted from TSR Mobile