AQA GCSE Combined Triology Chemistry Higher paper 2 12 June 2019 unoffical markscheme

I got the 0.31 too

Original post by 7hello4321

Same.
One question I got 0.002 moles
Another maths question to do with grams I got 0.31 or smth

Reply 82

jedm89

2

i got 50.8805 but then i divided 1 by that because it was about 1dm^3. dont have a clue if that was right tho. i got 0.0196

Original post by Lazaursq

What did y’all get for the answer to the calculating the solid in the 100cm^3 river

Original post by Jsavill1234

I got
312.5
8.8%
50.8805(completely forgot anything I learned for papper one)
15g
2 of them are defo wrong but that paper skipped all over the course.

Reply 83

Hdhsgaagac

2

I got 31000 ik that’s definitely wrong tho, do u think I cld get any marks

Reply 84

Mxrylynn

6

I got 0.03125 then to 2 sf I put 0.03??

Reply 85

Mubaraka2

1

Original post by Georgiax71x

For water test, first 2 marker
Drop of water into universal indicator paper. Turns green if it has a pH of 7 and is pure.

I wrote distillation

Reply 86

Original post by Georgiax71x

For the experiment, please tell me I was supposed to do the evaporating basin experiment with a mass balance, then with the tripod, Bunsen burner and gauze? ...

Yh thats exactly what i put.

Reply 87

Original post by Georgiax71x

I put equilibrium shifted to the left due to equilibrium wanting to reduce change and therefore shifting to the one with most moles.

No it shifts to right

Reply 88

laurenrobinsonn

6

Original post by THE-BLACK-CAT

I said you do evaporation cause even tho PH might be 7 it can still be not pure

You test it’s boiling point. If it’s 100°c then it’s pure x

Reply 89

Holbradbury

What did anyone put for the test and result for oxygen? really confused me for some reason😂

Reply 90

wizkid44

18

thats what I did

Original post by Georgiax71x

For the experiment, please tell me I was supposed to do the evaporating basin experiment with a mass balance, then with the tripod, Bunsen burner and gauze? ...

Reply 91

wizkid44

18

thats what I did! So glad someone else did the same as me

Original post by laurenrobinsonn

You test it’s boiling point. If it’s 100°c then it’s pure x

Reply 92

Bigbiologyboss03

5

Original post by Georgiax71x

For water test, first 2 marker
Drop of water into universal indicator paper. Turns green if it has a pH of 7 and is pure.

It’s pH can be 7 if it isn’t pure water

Reply 93

MelanieAnnexx

The oxygen test was the relighting of the glowing splint. Most easiest one and I think it's the only one that I actually got correct lollllll.

Reply 94

hols52

1

I put they dissolved at different rates do ya reckon that’s close enough or did I bomb it?!?!?

Original post by Natalia15

The one for chromatgraphy was that the dyes have different solubilities therefore they are attracted to the paper differently and go up different distances

Reply 95

lxkah

The chromatography identity question (answer was):
Calculate the RF value using chemical distance/solvent line distance and then compare your values to online Rf values, if they are the same they are the same chemical.

Reply 96

Dividingjem2

8

I think it’s by calculating rf values

Original post by hols52

I put they dissolved at different rates do ya reckon that’s close enough or did I bomb it?!?!?

Reply 97

Original post by Kaywarren321

this paper was so good!!! I was so worried that it would be really hard as paper 1 chemistry was good too.

ygm

Reply 98

warmz

4

Everybody is talking about some question giving the answer of like 0.31 or 31 but I can't remember this question, may somebody tell me what the question was?

Reply 99