Equilibria, Energetics and Elements (F325) - June 2011 Exam.

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Reply 1920

susan23

Am I the only one who wants to hide in a corner and cry myself to death! :frown:

Reply 1921

RodrigoB

brass n. A yellowish alloy of copper and zinc, sometimes including small amounts of other metals, but usually 67 percent copper and 33 percent zinc.

I GOT 33% SOMETHING. KILL ME

Reply 1922

Oink123

For delta G, I got 471 or something and said a reaction wouldn't happen spontaneously.

Reply 1923

*WiNdOw LiCkEr*

Original post by Teva

i got -108 or something similar...

i also got -108 therefore reaction was feasible
That exam was a complete cluster**** in every sense :mad:

Reply 1924

viksta1000

Original post by inam_ayaz

That paper was disgusting...missed around 30 marks wat bout evry 1 else??

dropped 30? :eek:

I think I've just about got about 30 marks

Reply 1925

*WiNdOw LiCkEr*

Original post by RodrigoB

brass n. A yellowish alloy of copper and zinc, sometimes including small amounts of other metals, but usually 67 percent copper and 33 percent zinc.

I GOT 33% SOMETHING. KILL ME

I also got 33% :angry:

Reply 1926

bl0b

Original post by Sceaga

that sounds ok , I used acetic acid and got 16:1

acetic acid is ethanoic acid lol

but i realised i square rooted something along the way which is wrong, so you are probably right.

Reply 1927

joe3469

Original post by Lissa-154

3x10^-3 s^-1

I have no idea whether it's right or not.

Yay! That's what I got too. Gradient of tangent at t=0/ 0.01

Reply 1928

Oink123

For the ice melting thing, I put entropy positive, enthalpy negative, and then changed enthalpy to positive as it's endothermic? Anyone else get this?

Reply 1929

msAW

Original post by ruby321

Was I the only one who was actually ok for time? I even had 15 mins left...
Though since everyone is saying they ran out of time it makes me think I've missed something out or did it all wrong :s-smilie:

I chose any acid for the buffer question... I did benzoic acid and got the ratio as 0.23
I swear I got that whole question wrong but I accepted that I would loose a few marks here and there.
I definitely need an A :s-smilie:

I just can't miss my grades, I actually don't know what I'll do if it happens

same, my med offer is gone but i can't even think about it because theres nothing i want to do more. this paper was incredible.

Reply 1930

RodrigoB

Original post by prince_s9

I had 10 minute for last Q. said when sodiumcarbonate is added to nutralise acid. i did HNO3 + NA2CO3 for step 2
but later in step 4 using the same solution they had Copper Iodide :/ don't know where that came from. Thats a gurantee my step 2 is wrong :frown:

ha I got confused right there

but then they gave us the products CUI and I2

so I just made up an equation from that LOOOOOOOOOOOOOOL

=FLOP

Reply 1931

Amit619

Original post by Heatheroink123

For the ice melting thing, I put entropy positive, enthalpy negative, and then changed enthalpy to positive as it's endothermic? Anyone else get this?

I did too

That paper was outrageously hard!

Reply 1932

Student21

Original post by Heatheroink123

For the ice melting thing, I put entropy positive, enthalpy negative, and then changed enthalpy to positive as it's endothermic? Anyone else get this?

I put enthalpy positive cos its endothermic and entropy negative as solid to liquid is more disordered. Am i right?

Reply 1933

Jambo_100

Original post by susan23

Am I the only one who wants to hide in a corner and cry myself to death! :frown:

Agreed. It was the hardest exam I've ever faced by a large margin. I'm very concerned that I won't get into university this year....

Original post by RodrigoB

brass n. A yellowish alloy of copper and zinc, sometimes including small amounts of other metals, but usually 67 percent copper and 33 percent zinc.

I GOT 33% SOMETHING. KILL ME

I got 6.7 ---> I didn't x10 and I feel like an idiot.

(edited 12 years ago)

Reply 1934

JakeChocz

Original post by chjw

you were given delta G

Yeah I know, I got confused but I figured Delta S doesn't change as it's always the same reaction and thought Rearranging T = Delta H/Delta S was easier than rearranging the whole other one?

Reply 1935

RodrigoB

Original post by student21

i put enthalpy positive cos its endothermic and entropy negative as solid to liquid is more disordered. Am i right?

exactly what i put
f***k yeah

Reply 1936

LucyylTjSx

Original post by susan23

Am I the only one who wants to hide in a corner and cry myself to death! :frown:

nope your definitely not :frown:

i'll be suprised if I get a gradehahaha

Reply 1937

Amit619

Original post by RodrigoB

brass n. A yellowish alloy of copper and zinc, sometimes including small amounts of other metals, but usually 67 percent copper and 33 percent zinc.

I GOT 33% SOMETHING. KILL ME

Haha, I got 33% too, fiddled with the numbers and ended up with that. I'm so depressed, and F324 resit is gonna finish me off.

Reply 1938

susan23

I actually couldnt do the majority of the paper!! I coundlt even do the buffer question1?!??! i dont why it just didnt make any sense?!?! I cudnt do the last question either?!?!? everything about that paper was so ****ed up ...i cudnt do the 3D structure properly...WT ...I dont understand...I revised so much and now I **** it all up....and there were like 4 -9 marker questions...I;ve probably lost 50+ marks...I actually feel like **** now...I seriuosly hope the grade boundaries are REALLY LOW im sorry I dont want 60/100 to be an A I want atleast 40/100 to be an A because that exam was so unfair..well half of it was unfair...CUDNt do ****ing ionic equations....stupid half equations...and they waffle so much...I dont give a **** if you want to make TANGY SWEeTS!¬!! I just want to do the work that was set in my BOOK not your ****ing imagination OCR!"!!! everyone should write emails to OCR...seriously..even if you FOUDN it Ok...because u dont know....!