This discussion is now closed.

Check out other Related discussions

AQA GCSE Chemistry Paper 2 Unofficial Markscheme (Higher) - Triple - 12/06/19

I could have down that opposite way, but usually work from right to left with moles etc

No? It only works one way because it only gave you the volume of one of the reactants that were completely used up.
The other way (using 7.25) is wrong since not all of it is used in the reaction.

Reply 181

Hudds999

16

Christ, I feel bloody stupid compared to some of yous in ere. I’m guessing you’re all southerners.

Reply 182

Terablitz

10

No they’re not. Alkanes are, look it up.

Original post by xxlaila03xx

nah what really annoyed me is when they said how can you test to show that pentene or something is unsaturated
but pentene is saturated. all alkenes are saturated wtf
I still did the test for unsaturated but still

Reply 183

MAXW303

12

No alkenes are unsaturated

Original post by xxlaila03xx

nah what really annoyed me is when they said how can you test to show that pentene or something is unsaturated
but pentene is saturated. all alkenes are saturated wtf
I still did the test for unsaturated but still

Reply 184

Hudds999

16

Original post by xxlaila03xx

nah what really annoyed me is when they said how can you test to show that pentene or something is unsaturated
but pentene is saturated. all alkenes are saturated wtf
I still did the test for unsaturated but still

Alkenes are unsaturated fats... alkanes are saturated.

Reply 185

nwk15

Original post by MAXW303

1250 for volume or 750?

I got 1250 cm^3

Reply 186

laila03x

17

whoopsy daisy got confused

Original post by Terablitz

No they’re not. Alkanes are, look it up.

Reply 187

Terablitz

10

Doesn’t matter as long as you got the bromine water test right

Original post by xxlaila03xx

whoopsy daisy got confused

Reply 188

laila03x

17

sorry I apologise
I am very stupid

Original post by Hudds999

Alkenes are unsaturated fats... alkanes are saturated.

Reply 189

angry ape.30

8

1250

Original post by nwk15

I got 1250 cm^3

Reply 190

MAXW303

12

Original post by Maximus 190

No? It only works one way because it only gave you the volume of one of the reactants that were completely used up.
The other way (using 7.25) is wrong since not all of it is used in the reaction.

That’s what I thought , but it’s the theoretical made so could still work,

Reply 191

chelseagirl2002

14

Original post by ShyB

Fractional distillation, I believe. I also talked about ultra-violet and reverse osmosis?

It asked you to find the mass of the dissolved solids. I did the crystallisation method and found the mass from that

Reply 192

laila03x

17

whooppsss
nvm ignore me

Original post by MAXW303

No alkenes are unsaturated

Reply 193

Itz_amina

5

Original post by Matt.curtis14

Anyone else get 17% for atom aconomy question?

17.4

Reply 194

MAXW303

12

Annoyed that I put 750 when I was debating outing 1250. Don’t they both assume rtp though?

Original post by MAXW303

That’s what I thought , but it’s the theoretical made so could still work,

Reply 195

chelseagirl2002

14

Original post by MAXW303

Yes it will, it’s above 450

I put 450. Is that fine?

Reply 196

Gone245

13

Original post by xspx

anything over 450 would be accepted I think, as all of the crude oil needs to be boiled before it can enter the fractionating column, and the table said the largest boiling point was 450°C

I just put 450 is that ok

Reply 197

Terablitz

10

Wait phytomining wasn’t a question right someone please confirm

Reply 198

Hudds999

16

Original post by xxlaila03xx

sorry I apologise
I am very stupid

Could be worse... you could’ve put 1000°c for the first question...

Reply 199

Nast_xoxo

5

Alkenes are unsaturated

Original post by hufieeiwhfihf

YES

Original post by xxlaila03xx

nah what really annoyed me is when they said how can you test to show that pentene or something is unsaturated
but pentene is saturated. all alkenes are saturated wtf
I still did the test for unsaturated but still

AQA GCSE Chemistry Paper 2 Unofficial Markscheme (Higher) - Triple - 12/06/19

Related discussions

Latest

Trending

Trending

Articles for you