OCR Chemistry F322 June 2016

Reply 260

Manliker

2

For the E/Z question did it ask to show it as skeletal or normal??

Reply 261

mattyk5

2

Original post by Manliker

For the E/Z question did it ask to show it as skeletal or normal??

skeletal i think

Reply 262

sssbbb

For the first question did the organic compounds remain cyclic or go to straight chains?

Reply 263

lukemurp890

5

Original post by sssbbb

For the first question did the organic compounds remain cyclic or go to straight chains?

I'm pretty sure it remains cyclic.

Reply 264

NadeemKha_Arab

10

Does anyone remember the answer to the last question on the first page?

I remember the question asking for a condition for the reaction and I put H3PO4.
My friend said they wanted ALL conditions, so acid AND high temp + pressure?

What did you put, cos that's the one question that's annoying me, despite being only one mark.

Reply 265

CookieMonster786

2

Original post by NadeemKha_Arab

Does anyone remember the answer to the last question on the first page?

I remember the question asking for a condition for the reaction and I put H3PO4.
My friend said they wanted ALL conditions, so acid AND high temp + pressure?

What did you put, cos that's the one question that's annoying me, despite being only one mark.

I put H2SO4 catalyst and heat

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Reply 266

BanterBus

6

Original post by NadeemKha_Arab

Does anyone remember the answer to the last question on the first page?

I remember the question asking for a condition for the reaction and I put H3PO4.
My friend said they wanted ALL conditions, so acid AND high temp + pressure?

What did you put, cos that's the one question that's annoying me, despite being only one mark.

It's an acid catalyst (commonly H2SO4) and heat. H3PO4 might still get u the mark. I'm pretty sure we didn't need to be specific about pressures and temperatures because it wasn't ethene that was reacting with water. However it did say 'H2O' and not steam, so maybe they might say allow any temperature above 100deg.

Reply 267

username2691909

4

H3PO4 and H2SO4 always get the mark

(edited 7 years ago)

Reply 268

Bgxx

2

Original post by mattyk5

skeletal i think

Omg it was skeletal?!?!?! Can anyone confirm this???

Reply 269

monpat

Original post by Bgxx

Omg it was skeletal?!?!?! Can anyone confirm this???

not sure if they specified but I did skeletal

Reply 270

rocketp95

8

Original post by Manliker

Yes! I got -346 i did exactly that! Hope it's right

I though it was 250cm of solution, so isn't 250 the mass

Reply 271

username1947027

8

Original post by monpat

not sure if they specified but I did skeletal

Don't think they specified I displayed

Reply 272

FluffyCommie

5

Original post by NadeemKha_Arab

Does anyone remember the answer to the last question on the first page?

I remember the question asking for a condition for the reaction and I put H3PO4.
My friend said they wanted ALL conditions, so acid AND high temp + pressure?

What did you put, cos that's the one question that's annoying me, despite being only one mark.

They would have wanted: H3PO4 catalyst, 6MPa, 300 degrees Celcius. That's what I learned for the conditions... Pretty sure that's right.

Edit: this may only be for the hydration of ethene. (May not apply to that question) but definitely a high pressure and temperature are needed!

(edited 7 years ago)

Reply 273

Chioma97

1

Original post by loren.o

I got +281 ..

I got -281. They said to calculate the enthalpy change of formation, but they gave us combustion data, so the arrows would have been pointing down, instead of up.