EDEXCEL CHEMISTRY UNIT 1 27th MAY 2016

How is everyone feeling about the chem exam tomorrow? I bombed my bio exam today which threw me off track since i was most confident about it. Now idk whether to expect the worst or hope for the best 😔 good luck to everyone who's doing the exam though!

(edited 7 years ago)

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Reply 1

Supermanxxxxxx

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can you do c

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Reply 2

crispynoodles

[QUOTE=Supermanxxxxxx;65224115] ImageUploadedByStudent Room1464300664.526694.jpg

can you do c

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There should be a peak at 71 and 89 and at 160 if I'm not mistaken

Reply 3

Supermanxxxxxx

Original post by crispynoodles

There should be a peak at 71 and 89 and at 160 if I'm not mistaken

ImageUploadedByStudent Room1464321515.594186.jpg

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Reply 4

crispynoodles

Where did you find the mark scheme for that paper? I've been looking for it everywhere haha

Reply 5

Sunethra

How was the paper guys?

Reply 6

sara142

Hi
For section B
The first question of 16O, what ions did you put down?
I've put
16O^+
(16O---16O)^+

Did anyone do this? And is that wrong or correct?!

Reply 7

Supermanxxxxxx

Original post by sara142

Hi
For section B
The first question of 16O, what ions did you put down?
I've put
16O^+
(16O---16O)^+

Did anyone do this? And is that wrong or correct?!

I did that

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Reply 8

medprospects

The last section did everyone write nickel catalyst high temperature?

For a question in multiple choice was the enthalpy -26kjmol^-1 or -52kjmol^-1

Also, in the MCQ there was another question about volume of gas, was it 50cm^3 or 100cm^3

:smile:

Reply 9

Arzam45

Original post by medprospects

the volume of gas in mcq was 75.
You had to compare using volume ratios ( 2 mol : 2 mol )

Reply 10

sara142

[QUOTE=medprospects;65235899]The last section did everyone write nickel catalyst high temperature?

For a question in multiple choice was the enthalpy -26kjmol^-1 or -52kjmol^-1

Also, in the MCQ there was another question about volume of gas, was it 50cm^3 or 100cm^3

:smile:

I said nickel and 150C^o
I got -26 for the multiple one
And for the last one I got 150 total volume of gas (I'm not sure if it's correct though)

Reply 11

Sunethra

Original post by sara142

I said nickel and 150C^o
I got -26 for the multiple one
And for the last one I got 150 total volume of gas (I'm not sure if it's correct though)

Are you discussing IAL?

Reply 12

tans

I put -52 kj does anyone know if the right answer is -52 or -26? Also i put 100cm^3 and i think thats right but not 100% sure

Reply 13

Supermanxxxxxx

Original post by tans

I put -52 kj does anyone know if the right answer is -52 or -26? Also i put 100cm^3 and i think thats right but not 100% sure

I got -52 and 50 for volume

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Reply 14

tans

For the Q after the one about oxygen in mass spec, was the answer deflection by magnetic field?

Reply 15

averagemarks

cmon people more questions

Reply 16

tans

What did people get for the one about how many bonds are broken in pentane and how many made

Reply 17

sara142

Original post by tans

For the Q after the one about oxygen in mass spec, was the answer deflection by magnetic field?

yeah I said that

Reply 18

Supermanxxxxxx

Original post by tans

What did people get for the one about how many bonds are broken in pentane and how many made

That bond breaking one confused me I literally did the displayed formal and wrote out how many bonds were formed and of what kind idk is that would be right

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Reply 19

sara142

Original post by tans

What did people get for the one about how many bonds are broken in pentane and how many made

I got 21 bonds broken
4 bonds between carbon (C-C)
12 bond between hydrogen and oxygen (C-H)
and 5X(O-O)

and 22 made

But I am not sure, did anyone get that?