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F334 (14/01/2013 1:30PM) - Salters Chemistry (Chemistry of Materials) Revision Thread

I got 1.2g

anyone else get elim, add, add?

oh and the monomer b was 1,6-diaminohexane

**** that repeating unit and massive ion in alkaline solution thing :/

Reply 182

LOLAKALMAO

Original post by aWildPidgey

anyone else get elim, add, add?

oh and the monomer b was 1,6-diaminohexane

**** that repeating unit and massive ion in alkaline solution thing :/

I got elim. Add and sub

what did you get for the 6 mark question?

Reply 183

abzy1234

14

That was a weird paper. I got 1.2g as well for the calculation.

What on earth was the backward rate (or something) rate of reaction? I must say some of the questions were weirdly worded; especially the one on DNA.

I'm guessing average grade boundaries though, because it had some really straightforward questions. I know I made some silly errors, damn :frown:

Remember guys, there's no point doing a lengthily post-mortem; focus on your other exams.

Reply 184

abzy1234

14

Repeating unit of PPA:

567px-Polyphthalamid.svg.png

I had difficulty in locating where the C=O would be attached to the benzene ring :/

Reply 185

Mustafa007

Original post by abzy1234

That was a weird paper. I got 1.2g as well for the calculation.

What on earth was the backward rate (or something) rate of reaction? I must say some of the questions were weirdly worded; especially the one on DNA.

I'm guessing average grade boundaries though, because it had some really straightforward questions. I know I made some silly errors, damn :frown:

Remember guys, there's no point doing a lengthily post-mortem; focus on your other exams.

Wise words.. glad I am not the only person with 1.2g

Reply 186

ebc

I don't even want to talk about it.

Reply 187

abzy1234

14

Original post by Mustafa007

Wise words.. glad I am not the only person with 1.2g

Did you get a dilution factor of 14/100 or something like that?

Reply 188

david2457

7

Original post by abzy1234

That was a weird paper. I got 1.2g as well for the calculation.

What on earth was the backward rate (or something) rate of reaction? I must say some of the questions were weirdly worded; especially the one on DNA.

I'm guessing average grade boundaries though, because it had some really straightforward questions. I know I made some silly errors, damn :frown:

Remember guys, there's no point doing a lengthily post-mortem; focus on your other exams.

I found it all very hard, and I did do silly mistakes myself too, like that addition thing. I halved the 'backward rate' question to get 0.5*10^-5.

Oh and vote if you haven't already, I really hope these boundaries are low.

http://www.thestudentroom.co.uk/showthread.php?t=2227826

Reply 189

Nath1194

Original post by abzy1234

That was a weird paper. I got 1.2g as well for the calculation.

What on earth was the backward rate (or something) rate of reaction? I must say some of the questions were weirdly worded; especially the one on DNA.

...

Remember guys, there's no point doing a lengthily post-mortem; focus on your other exams.

I must have screwed that one badly, I got 21.something. Ooops :confused:

I put 1.0x10^-5 or something like that, just wrote down the rate of I2 being produced 'cause i figured if that's the rate I2 is produced then is it not the rate 2I- is disappearing?

Yeah, good shout. I could dwell exam all week >.<

Reply 190

super121

5

Original post by aWildPidgey

Well, that was disgusting.

Agreed.

That was SO. HARD.

It was quite tough, think I did ok but not amazingly

Reply 193

super121

5

Original post by LOLAKALMAO

I got elimination addition substitution

Same

Reply 194

abzy1234

14

Original post by david2457

I found it all very hard, and I did do silly mistakes myself too, like that addition thing. I halved the 'backward rate' question to get 0.5*10^-5.

Oh and vote if you haven't already, I really hope these boundaries are low.

http://www.thestudentroom.co.uk/showthread.php?t=2227826

I got elimination, addition, substitution. I'm thinking now the substitution is wrong, because what else would you produce when forming 1,6-diaminohexane? Oh well.

The lowest it has fallen is 63. I doubt it fall anymore tbh :/

Original post by Nath1194

I must have screwed that one badly, I got 21.something. Ooops :confused:

I put 1.0x10^-5 or something like that, just wrote down the rate of I2 being produced 'cause i figured if that's the rate I2 is produced then is it not the rate 2I- is disappearing?

Yeah, good shout. I could dwell exam all week >.<

Don't worry, we should get some method marks. Salters calculation questions are awful.

I have no idea, my teachers didn't even know what that was about. Shameful question, wasn't nowhere in spec; and I have no idea how you work that out :/

Oh well.

Reply 195

abzy1234

14

Original post by super121

Same

Likewise. Here's hoping :smile:

Reply 196

david2457

7

Original post by super121

Same

I got the same, but one of my friends who had 294 UMS said it was elim, add, add.

Reply 197

LOLAKALMAO

I don't think you had to use the dilution in the calculation

Reply 198

:)ella

15

Also what did people get for the 6mark question on iron being a homogeneous catalyst? I kind of understood it but I don't think I phrased it very well :frown:

Reply 199

Crushy10

i got elim add add as well and my calc was 20.7 or 21.7 i can't remember which one.

F334 (14/01/2013 1:30PM) - Salters Chemistry (Chemistry of Materials) Revision Thread

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