A2 OCR Chemistry B F334 - June 2015

I put that because the vanadium produced form the reaction contained oxygen so there must have been oxygen in the process (forgot what they called it)

Ah I thought there may be oxygen in the somewhere...or atleast s reacting with air

Original post by kevintai0901

I put chlorine. Please do correct me if you think I am wrong.

I know people who've put that down so I'm not sure
I think they said 'one of the toxic gases' so there may be more then one option

Reply 581

Minecraft27

14

Somebody in my exam room was LITERALLY crying. Not kidding. She was ACTUALLY in tears for the second half of the exam. She also came out of the room crying her eyes out. Come to think of it, most people in the room were making some kind of grunt during that paper.

Reply 582

Jaz_ace

1

what did you lot write for the iron with NaOH question

Reply 583

diba786

2

97 for the iron calculation right??

Reply 584

BrokenS0ulz

3

Original post by Jaz_ace

what did you lot write for the iron with NaOH question

Green solution --> green precipitate
Fe2+ + 2OH- --> Fe(OH)2

Reply 585

kingcobra007

2

Original post by tealover96

Ah I thought there may be oxygen in the somewhere...or atleast s reacting with air

I know people who've put that down so I'm not sure
I think they said 'one of the toxic gases' so there may be more then one option

Yeah i thought about chlorine gas, i think they might both be right

Reply 586

qwepoizxcmnb

4

Original post by TommyCooper97

Are you serious or are you actually having a laugh?

What do you think lol? This is the same guy who said an A would be 89/90. Don't feed the troll plz.

Reply 587

BrandonRendell

Hydrolysing that big polymer with the arene groups should have gotten you one with NH3+ and the other with a carboxyl group and the OH untouched,

Percentage by mass question I got 97.1%

The choking gas I wrote ethanoic acid

The toxic gas from the steel recycling bit i wrote chlorine gas

The thing that reacts with iodine was the one under it in the table

TLC question was nice

the biology DNA replication was nice, my teacher used some retarded way of remembering that guanine and cytosine form three H bonds so that made me smile when it came up

Drawing two amino acids reacting together is a godsend OCR y u give free marks thanks very much, aswell as the enzyme v ph graph <3

I just thought the paper was the nicest they've given in a long time. Think about it, no long ass question about rates, multi step reactions etc, no strange curveball mole calculation

I reckon the only things I know I got wrong was the IR spectra, and the two 1 markers about combinational chemistry and improving medicines

Reply 588

Mars256

8

Can anyone member what enzyme was involved in the question where we had to draw the rate-pH graph?

Reply 589

diba786

2

For the toxic gases did people get ethanoic acid for one??

Reply 590

kingcobra007

2

I know everyone is hating the paper at the moment, but i really dont think it was that bad compared to past papers, the main questions ( TLC, DNA, Calculation) were all fairly easy and thats a large chunk of marks tbf, some hard questions in there too though

Reply 591

tealover96

15

Original post by Minecraft27

Somebody in my exam room was LITERALLY crying. Not kidding. She was ACTUALLY in tears for the second half of the exam. She also came out of the room crying her eyes out. Come to think of it, most people in the room were making some kind of grunt during that paper.

The amount of sighing I could hear almost comforted me knowing I wasn't the only one
And then we came out and people were just breaking down

Reply 592

Minecraft27

14

Original post by BrandonRendell

Hydrolysing that big polymer with the arene groups should have gotten you one with NH3+ and the other with a carboxyl group and the OH untouched,

Percentage by mass question I got 97.1%

The choking gas I wrote ethanoic acid

The toxic gas from the steel recycling bit i wrote chlorine gas

The thing that reacts with iodine was the one under it in the table

TLC question was nice

the biology DNA replication was nice, my teacher used some retarded way of remembering that guanine and cytosine form three H bonds so that made me smile when it came up

Drawing two amino acids reacting together is a godsend OCR y u give free marks thanks very much, aswell as the enzyme v ph graph <3

I just thought the paper was the nicest they've given in a long time. Think about it, no long ass question about rates, multi step reactions etc, no strange curveball mole calculation

I reckon the only things I know I got wrong was the IR spectra, and the two 1 markers about combinational chemistry and improving medicines

GTFO.

Reply 593

Emma244

1

Original post by Welbeck

f4cking bu11 sh1t paper! OCR are taking the pis5. I'm supposed to be off to birmingham/bath to do a chem degree, but don't even know if I should now!

I'm also hoping to go to Bath to study chemistry and pretty sure it's not going to happen after that, this exam and the biology exam on Monday have been horrendous, so difficult compared to previous years.

Reply 594

Jaz_ace

1

Original post by BrokenS0ulz

Green solution --> green precipitate
Fe2+ + 2OH- --> Fe(OH)2

arr i used fe3+

Reply 595

Minecraft27

14

This paper was like they took four of the hardest questions from all the past papers ever, and mashed them all together into one horrible thing. Then they got a question from a biology paper and stuck it on the end.