Edexcel A2 Chemistry Exams -6CH04 (14th June) and 6CH05 (22nd June) Discussion Thread

Sorry to interrupt the exam discussion, but I'm finally done with my A-level Chemistry and I feel like I'm quite possibly going to be getting my target grade.

A big thank you to @samb1234, @Don Pedro K., @sabahshahed294, @C0balt and everyone on this thread for all the help!

Best of luck with other exams and until results! :biggrin:

Reply 2281

C0balt

16

Original post by Ayman!

Sorry to interrupt the exam discussion, but I'm finally done with my A-level Chemistry and I feel like I'm quite possibly going to be getting my target grade.

A big thank you to @samb1234, @Don Pedro K., @sabahshahed294, @C0balt and everyone on this thread for all the help!

Best of luck with other exams and until results! :biggrin:

Glad to hear, well done :biggrin:

No problem, I didn't get to help as much as I did last year but glad to have been of some help anyway. Thanks and gl with your remaining exams too

Reply 2282

setarcos

8

Any predictions for grade boundaries? :smile:

Reply 2283

lfcrules

2

Original post by setarcos

Any predictions for grade boundaries? :smile:

unit 4 A* 77
unit 5 A* 79

Reply 2284

setarcos

8

Original post by lfcrules

unit 4 A* 77
unit 5 A* 79

Maybe slightly lower? considering that there were a lot of trick questions that caught quite a few people. I think maybe 77 for an A* in unit 5 and unit 4 was definitely a lot more difficult than last year so maybe around 75 for an A*.

Reply 2285

_H_V

4

For the synthesis 5 marker, did the questions say write equations for each step? Because I only wrote the intermediates and regents for the steps :/

Posted from TSR Mobile

Reply 2286

samb1234

OP

13

Original post by Ayman!

Sorry to interrupt the exam discussion, but I'm finally done with my A-level Chemistry and I feel like I'm quite possibly going to be getting my target grade.

A big thank you to @samb1234, @Don Pedro K., @sabahshahed294, @C0balt and everyone on this thread for all the help!

Best of luck with other exams and until results! :biggrin:

No problem, glad it went well for you and best of luck for those last few exams and what ever else you go on to do.

Reply 2287

drj24

8

It was okay, a few hard questions, don't think boundaries will be as high as expected

Reply 2288

Hamzy45

1

Original post by Benberisha

Is that hamzy from Ealing? I got 6 aswell. What's did you draw for the cucl4 2-? I drew the tetrahedral the read the question and drew it as square planar whilst knowing that's wrong...also what did you put for the electrode for oh- fuel cell?

Yeah ahaha. Well I knew its usually tetrahedral but I drew square planar as it has the same shape as the platinum thingy. The OH- fuel cell the MC I put platinum and KOH but think thats wrong

Reply 2289

DesignPredator

9

Original post by Hamzy45

Yeah ahaha. Well I knew its usually tetrahedral but I drew square planar as it has the same shape as the platinum thingy. The OH- fuel cell the MC I put platinum and KOH but think thats wrong

In the official Edexcel and the George Facer it says platinum should be used for alkaline fuel cell.

Reply 2290

scrlk

7

Original post by Crespo0008

Do you remember your method?

Find moles in titre

1:2 ratio, so divide moles by 2 giving you moles of paracetamol in 20cm^3.

Multiply by 5 giving you moles in 100cm^3, then multiply by Mr giving you mass of paracetamol.

Divide by 0.5g and multiply by 100 giving % mass (95.13%).

Reply 2291

cattubato

5

Original post by highschool

Also how are there 6 compounds? Wouldn't the 1 - methyl, 2,4 -nitrobenzene be the same compound as 1-methyl, 4,6 nitrobenzene? I put down 4 because they didn't ask for isomers they asked for compounds so I thought different unique compounds.

1-methyl ...

2,3 / 2,4 / 2,5 / 2,6 / 3,4 / 3,5

... dinitrobenzene

Reply 2292

lfcrules

2

HAHAHAHAHHA found an nmr simulator and it turns out 2-amonopropanoic acid and 3-aminopropanoic acid do actually have one peak at different chemical shifts , they better accept this !!!!!!!!!!

Reply 2293

crimson1234

2

Do you guys think potassium chloride would be ok for the salt bridge question. Also what was the problem with only making 1 isomer.

Reply 2294

lfcrules

2

Original post by crimson1234

Do you guys think potassium chloride would be ok for the salt bridge question. Also what was the problem with only making 1 isomer.

Yeah potassium chloride should be fine. Problem with producing only one isomer is that it requires seperation form the racemic mixture whch is expensive wastes time etc. To avoid this they use stereospecific techniques which produce one isomer only

Reply 2295

SRR3456

1

which electrode cell values did people use as there are 2 values for I- ions in the data book?!

Reply 2296

Crespo0008

1

Original post by scrlk

Find moles in titre

1:2 ratio, so divide moles by 2 giving you moles of paracetamol in 20cm^3.

Multiply by 5 giving you moles in 100cm^3, then multiply by Mr giving you mass of paracetamol.

Divide by 0.5g and multiply by 100 giving % mass (95.13%).

I did the titre then like an idiot times by 2 instead of divided and then times by Mr and divided by 0.5 to get like 76% how many marks do you reckon I'd get?

Reply 2297

JoeyTr

8

Original post by yaplonker

Don't think so last years paper was way easier and it was 74 for an A* you are off by a lot

I really do hope you're right, but it's been 80 for a* twice before and I don't see this being any different. But I do hope you're right.

Reply 2298

Whizbox

7

Original post by SRR3456

which electrode cell values did people use as there are 2 values for I- ions in the data book?!

The one it gave you in the table?

Reply 2299

scrlk

7

Original post by Crespo0008

I did the titre then like an idiot times by 2 instead of divided and then times by Mr and divided by 0.5 to get like 76% how many marks do you reckon I'd get?

Probably drop around 1-2 marks + error carried forwards for both mistakes.

Edexcel A2 Chemistry Exams -6CH04 (14th June) and 6CH05 (22nd June) Discussion Thread

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