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ocr a f325 revision thread

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Reply 3880

otrivine

Original post by PythianLegume

Yes. I didn't do this, and feel stupid now because I got the harder questions fine. :s-smilie:

was the rate of reaction for the order thing, 0.02 something along those lines?

Reply 3881

s.shahid

Original post by Nuna

Am I the only one who didn't even get time to do the last 7 mark question.....OCR what do you gain from being so evil to us :frown:

i got like 5 mins but i couldn't figure it out even though I've done such question in my revision. so i lost the 7 marks too.

Reply 3882

otrivine

Original post by Kat12395

I definitely got a number in the 2000's for delta G, and +218 for glucose?:/

yes that sounds familiar, got that too

Reply 3883

DudeBoy

Original post by otrivine

was the rate of reaction for the order thing, 0.02 something along those lines?

I made a tangent at 40 sec and worked out the gradient, couldn't remember what i got theough

Reply 3884

sugar23

Original post by emah123

was is just me or was that the HARDEST PAPER EVER. good bye to medical school :frown:

IKR! It's so annoying, I'm going to email OCR complaining to them, who's with me?

Reply 3885

username878045

Original post by otrivine

was the rate of reaction for the order thing, 0.02 something along those lines?

I got 0.045 by drawing a tangent and finding the gradient.

Reply 3886

Nuna

Original post by om-nom ._.

no don't worry, me too! i also ran out of time! i found it a reaalllly rushed paper :frown:

yep...that's 7 marks automatically gone..God knows how many other marks I lost here and there..

Reply 3887

fayled

NiSO₄.7H₂O, anyone (please)?

My working found that it had 7H₂O and obviously Ni, and I had the molar mass of the salt. So I found the molar mass of 2- ion in the salt and guessed it as sulphate. The molar mass of sulphate was actually 0.1 off of what I wanted it to be but I guess I made a rounding error somehwhere...

Reply 3888

keepontrying

Original post by Kat12395

I definitely got a number in the 2000's for delta G, and +218 for glucose?:/

I got 218 and I cant remember delta G so hopeing someone got the same so I can re-jog the memory

Reply 3889

Kat12395

Original post by Nuna

Am I the only one who didn't even get time to do the last 7 mark question.....OCR what do you gain from being so evil to us :frown:

OMG I did exactly this! Thank god it wasn't just me!:L

Reply 3890

beccac94

What did people get for the photosynthesis one??? I can remember mine started with an 8 and was a massive number

Reply 3891

otrivine

Original post by PythianLegume

I got 0.045 by drawing a tangent and finding the gradient.

will people get different answer for this? cause I remember in the June 2011 they accepted a range of answers/

Reply 3892

username878045

Original post by sugar23

IKR! It's so annoying, I'm going to email OCR complaining to them, who's with me?

You can't complain because you found the paper hard. All the papers have become harder of late, and boundaries are adjusted anyway.

Reply 3893

Kat12395

Original post by keepontrying

I got 218 and I cant remember delta G so hopeing someone got the same so I can re-jog the memory

2214? Something around there?:/

Reply 3894

otrivine

Original post by DudeBoy

I made a tangent at 40 sec and worked out the gradient, couldn't remember what i got theough

for the question on the standard electrode, the oxidisng agent was IO3- right?

for the explain difference between aqueous acid and aqueous base , did u use equations as well