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Edexcel A2 Chemistry 6ch04/05 JUNE 2015

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Reply 1240

frozo123

Original post by rowanbarnesss

Did anyone get 9.somethimg for the pH question?? I think I screwed that one up

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12.0

Reply 1241

blueynuey1

Please vote on difficulty here:

Poll: http://strawpoll.me/4593433

Reply 1242

hsheahan

Don't know if its just me that does this, but I look at the pattern in multiple choice. Did anyone get something like 3 D's in a row, and 3 B's?

Reply 1243

DCMed96

Edexcel is so good at 'changing lives', what a cheeky paper again presented by edexcel, you got it, well done....
lots of explanation and long answered questions... not sure if i got them all

Reply 1244

joanneeve

anyone remember their entropy values?

Reply 1245

madmenace

Original post by Wahid1

Doesn't matter because deltaSsurr compensates.

+400something

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at kinda question that though?...

wasted too much time had to rush last part (section C) wrote quartet and triplet but didn't put in the numbers,

messed up the empirical formula

I just remembered that I couldn't see what absorptions go and which new ones are produced was in such a rush! :angry:

Reply 1246

MoHoosen9167

-5 for entropy
-2 for whether it would increase or decrease
-2 for rate
-1 for units of k
-1 for anomalous result
-3 for safety

That's 76/90
What do you think that'll be

Reply 1247

DCMed96

Original post by Wahid1

Predictions per favore

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Slightly lower than last year, if not the same... so 80ish for 120 ums

Reply 1248

MoHoosen9167

Did anyone get 10-13 for the last delta for the last question, the COOH?

Reply 1249

Wahid1

Original post by DCMed96

Slightly lower than last year, if not the same... so 80ish for 120 ums

I think this paper was fairly harder with even more people struggling with it.

What for an A?

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Reply 1250

Amanda Brown

For the outliers question I said that the points could be joined together to form a curve so it could be concluded that the reaction is second order with respect to A but then I said more experiments need to be done- then I got rate=[A][X] and 0.201... Something for the value of k???

Reply 1251

Wahid1

Original post by MoHoosen9167

Did anyone get 10-13 for the last delta for the last question, the COOH?

That and 0.1-1.9 yeh

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Reply 1252

madmenace

how would you extract the oil?????????????

I said filter and then heat????????????

im done for!!!!

Reply 1253

Undisclosed 15

Original post by MoHoosen9167

-5 for entropy
-2 for whether it would increase or decrease
-2 for rate
-1 for units of k
-1 for anomalous result
-3 for safety

That's 76/90
What do you think that'll be

What safety question?

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Reply 1254

frozo123

Original post by MoHoosen9167

Did anyone get 10-13 for the last delta for the last question, the COOH?

yeah did you get 1.8-3.0 for the other one?
C=C for the diminishing one?
and OH in carboxylic acids for the appearing one?
k=0.21
KOH used for transest one?

Reply 1255

HappyCheesecake

I wrote condensation instead of esterification :/ Would that give me the mark?

I found section A to be quite difficult as well, those multiple choice questions threw me off :frown:

Reply 1256

MoHoosen9167

Original post by Wahid1

That and 0.1-1.9 yeh

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We were already given the 0.1-1.9

My second one was 1.8-3.0

Reply 1257

Shadowlunar

What did people get for the entropy change.. I messed up the enthalpy change and somehow ended up with -388 or something like that

Reply 1258

frozo123

Original post by HappyCheesecake

I wrote condensation instead of esterification :/ Would that give me the mark?

I found section A to be quite difficult as well, those multiple choice questions threw me off :frown:

should do

Reply 1259