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AQA CHEM5 unofficial MS

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I put sulfur for the first question, I'm guessing i'd still get covalent mark but was there anything that specified it be p4O10? Dont think I read it properly

The question said Na to P :c

Reply 21

hi-zen-berg

Original post by skylake

2Na + 2H2O --> 2NaOH + H2

Original post by EverydayHell

I did that, what did you put?

cheers, noted.

dunno how i dropped a decent few marks on periodicity Qs i was too hyped to get into the meat of it. I put down S instead of P jesus christ

Reply 22

Adam240598

Original post by vish.handa

I put sulfur for the first question, I'm guessing i'd still get covalent mark but was there anything that specified it be p4O10? Dont think I read it properly

Me too, I didn't read anything that specified it was phosphorus, but I am prone to stupid errors 😂

Reply 23

hi-zen-berg

Original post by Azzer11

Should have got around the 85-90 mark, taking into account the enthalpy questions that I messed up and a few other silly mistakes.

nice one. u going for A*?
i think ill just be happy to sit on my AS UMS and get an A. A-levels have tired me out now

Reply 24

vish.handa

Original post by EverydayHell

The question said Na to P :c

Oh okay well at least got the covalent mark , just shame I didnt read properly haha

Reply 25

hi-zen-berg

Original post by Anam

What did you all put for the autocatalyst qs where it said identify the catalyst?

Original post by JCleggy

Yeah the autocatalysis question needs adding^

Cheers.

Reply 26

vish.handa

Original post by Adam240598

Me too, I didn't read anything that specified it was phosphorus, but I am prone to stupid errors 😂

Well hopefully we can get a follow through mark for making correct equation for h2so3 (or is that too hopeful of aqa :wink:

)

Reply 27

EverydayHell

For Q I said NH3 not in excess and the gas produced was NH4+, do you think this could still be right?

Reply 28

Azzer11

Original post by hi-zen-berg

nice one. u going for A*?
i think ill just be happy to sit on my AS UMS and get an A. A-levels have tired me out now

I was hoping for an A*, although I'm not so sure after that horrible Chem4. And yeah aha I agree, I have just 2 more left and then freedom! :smile:

Reply 29

vish.handa

Original post by hi-zen-berg

cheers, noted.

dunno how i dropped a decent few marks on periodicity Qs i was too hyped to get into the meat of it. I put down S instead of P jesus christ

I did sulfur too haha I feel the pain

Reply 30

hi-zen-berg

Original post by EverydayHell

For Q I said NH3 not in excess and the gas produced was NH4+, do you think this could still be right?

Don't know about that mate.. don't think so I'm afraid.

Reply 31

jjsnyder

Think your value of G is wrong, iirc it was around 185.5KJmol^-1 (I did not divide by 2).
Nvm your value is probably correct, I didn't realise it was in degrees :/

Posted from TSR Mobile

(edited 7 years ago)

Reply 32

hi-zen-berg

Original post by Azzer11

I was hoping for an A*, although I'm not so sure after that horrible Chem4. And yeah aha I agree, I have just 2 more left and then freedom! :smile:

loool im personally worried about missing my offer due to maths slipping to a B so don't have the luxury of thinking about A*s rn

BIOL5 and D1 by any chance??

Reply 33

jjsnyder

Original post by EverydayHell

For Q I said NH3 not in excess and the gas produced was NH4+, do you think this could still be right?

No that will not gain marks. Correct answer was a reagent containing carbonate ions, NH4+ will not exist by itself, and most compounds it forms are solids.

Posted from TSR Mobile

(edited 7 years ago)

Reply 34

jjsnyder

Original post by EverydayHell

Just for my own knowledge why not?

Sorry put an explanation above^. NH4+ does not exist by itself, and the compounds it forms are solids (usually salts).

Posted from TSR Mobile

Reply 35

Azzer11

Original post by hi-zen-berg

loool im personally worried about missing my offer due to maths slipping to a B so don't have the luxury of thinking about A*s rn

BIOL5 and D1 by any chance??

Biol5 tomorrow and Edexcel C4 on Friday :afraid:

Reply 36

hi-zen-berg

Original post by isaisababy

https://docs.google.com/document/d/1smR3w_XZhzLCLrqIQ_U69a47b3KLGJoEbjqyFy7Ss84/edit#

full markscheme collabbed by tsr

solid ^.^

Reply 37

username1133132

Thanks for the unofficial mark scheme! Calculated and been harsh got approx 86 :biggrin:

I'm happy!

Reply 38

thomaarrss

did the hydrogen oxygen fuel cell have to be in any order?!! Did it say positive negative electrode because i just did whatever order?? how many marks you think ill loose?