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AQA CHEM1: 15th May 2012

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But-1-ene is what I put...? Does anyone remember how to do the relative abundance of Rubidium question where one isotope was 2.5x greater than the other? What did people times (x) each isotope by? Thanks

no thats the positional isomer?

Reply 601

joker12345

Do you think they'll accept 2H+ as the reagent (instead of H2)? I also put hydrochloric acid in brackets, but that was not a unit 1 question!

Reply 602

Zytex

Original post by jodiedoodles

What was the process for removing that pollutant? (Sorry, can't remember the exact question!)

The process (I believe) was called neutralisation, but you add calcium oxide to the sulfur dioxide.

Reply 603

jodiedoodles

Original post by AishaTara

flue gas desulfursation?

Oh good , that's what I got too :smile:

Reply 604

king101

@Zytex it never said functional it said possitional i think.

Reply 605

joker12345

Original post by king101

I put down neautralisation would i get the mark

That was the answer to the 'what process happens when the toxis gas is removed' question :smile:

Reply 606

AbominableSnowman

Why are people getting such large numbers for the gas equation/m=nxmr I seem to remember getting 0.2(something or other). Did you multiply the 100kPa by 1000 to get it into regular Pascals, and then divide the volume by 1,000,000 to get it into metres cubed? Because I'm getting understandably worried now.

(edited 11 years ago)

Reply 607

Zytex

Original post by king101

@Zytex it never said functional it said possitional i think.

It was definitely functional. Lots of other people have said functional too.

Reply 608

joker12345

Original post by king101

@Zytex it never said functional it said possitional i think.

Pretty sure it was functional group, that's what I did anyway!

Reply 609

AishaTara

[COLOR="#FF0000"]Predicted grade boundaries?

Reply 610

king101

Yeh, so what was the question to he said?

Reply 611

Jack_Smith

Original post by joker12345

I got the same, so hopefully it's right!

Just checked some other forum they got the same aswell! was so confused on this one but hopefully its right!

Reply 612

neeloo

Original post by king101

I put down neautralisation would i get the mark

Yeah thts what I put because it is an acid/ base reaction --> producing a salt so I dont know, im sure it asked for CaO and then asked what is the process, I cnt remember?

Reply 613

Philippamalko

Original post by king101

@Zytex it never said functional it said possitional i think.

you had to draw the functional group isomer and name the positional if i remember right, so it asked for both

Reply 614

Zytex

Original post by AishaTara

Predicted grade boundaries?

I would predict 56-57/70 for an A.
Then -6 each time for the other grades.

Reply 615

pjanoo

Original post by AishaTara

i think you forgot to divide moles by 5 to get just 1 mole instead of total. I got 14.1 first too

ahhh

silly mistake, especially considering I went through that question again to be sure :redface:

how many marks do you think I'd lose for not dividing?

Reply 616

joker12345

Original post by AbominableSnowman

Yes. I think I got 0.202 (unlesss I'm remembering a different question ...)

Reply 617

Mystic Creature

Original post by king101

I put down neautralisation would i get the mark

I put neutralisation for the part where they asked for the process. In a past paper, there was a similar question - i wrote flue gas desulfuisation, but wasnt worth a mark..so I don't know :s-smilie:

Reply 618

AishaTara

Original post by pjanoo

ahhh

silly mistake, especially considering I went through that question again to be sure :redface:

how many marks do you think I'd lose for not dividing?

well usually they wont curse you for all of it, probs 1, max 2.
I lost a silly mistake for writing B204 instead of B2CL4 I could smack myself with a brick atm :P