OCR Chemistry A F322 Chains, Energy and Resources Wed 23 May 2012

Scroll to see replies

Reply 380

fayled

Original post by Bright

LMAOOOOOOOOOOOOOOO he's gonna be doing pharmacy so the username makes sense hehehhahahaha :tongue:

LOL, he or she or nasal spray make me laugh though

Reply 381

Pride

Original post by Bright

I feel ready for this exam but I don't want to say that a not do well...

Please God help me do wellllllllllllllllllllllllllllll

you'll be fine, I'm sure you've been revising thoroughly and wisely

Cheers guys :smile:

Original post by Pride

you'll be fine, I'm sure you've been revising thoroughly and wisely

Hopefully... it's one of the only exams I have revised this much for :') I'm aiming for a high UMS as well .. and that's only going to happen if I don't make stupid mistakes :angry:

Good luck to you! :smile:

Reply 384

Lay-A-Egg

Feeling kinda depressed after the biology exam >.< hoping this'll be better. Though the grade boundaries are quite a bit higher for Chemistry aren't they? D= Godammit, please be nice this time OCR!

Reply 385

Kir4nK

Original post by Pride

increases the rate of the reaction
can be recycled, used again
non toxic, no harmful chemicals
no high energy requirements which would denature enzymes --> benefits of lower energy use include no need to burn fossil fuel which emits CO2 a greenhouse gas, lower energy costs

yes also mention that more pure/specific products are produced too

Reply 386

fayled

Bet this exam will throw up one tough question, like the bond angle one from f211.

Problem is there's no way to prepare for them...

Reply 387

Bright

Original post by fayled

LOL, he or she or nasal spray make me laugh though

Hahah bless him, I'm gonna see him at uni if we both get the grades ;P

Reply 388

Craming Revision

Original post by fayled

Bet this exam will throw up one tough question, like the bond angle one from f211.

Problem is there's no way to prepare for them...

Lifes a bitch, she cheated on me so i married her 8')

Reply 389

narli

i need 120 ums to get an A overall.. lets hope the exam is.. doable/

Reply 390

DonAlinor

How is it going with revision, the biology exam was quite hard so now revising for the chem on wed
Ask me some questions :smile:

Reply 391

fayled

Original post by DonAlinor

How is it going with revision, the biology exam was quite hard so now revising for the chem on wed
Ask me some questions :smile:

Ok.
What is your name?

Reply 392

Pride

Original post by Kir4nK

yes also mention that more pure/specific products are produced too

oh yeah, ok.

Here's one everyone:
Describe and explain the effect of a decrease in concentration of sulfuric acid and sodium hydroxide on the rate of the following chemical attraction:

H2SO4 + 2NaOH --> Na2SO4 + 2H2O

Reply 393

Bright

Original post by fayled

ok.
What is your name?

looooooooooooool such a troll.

Reply 394

DonAlinor

Original post by fayled

Ok.
What is your name?

Lol, my name is alinor though I meant chemistry questions

Reply 395

DonAlinor

Original post by Bright

looooooooooooool such a troll.

Haha

Reply 396

fayled

Original post by DonAlinor

Lol, my name is alinor though I meant chemistry questions

Just making sure you were ready for the tricky part of the exam which is filling in the front page.

Do keep in mind that you must write in BLOCK CAPITALS.

Reply 397

Bright

Original post by Pride

The decrease in concentration would lead to a decrease in the frequent collision of the particles. This means the number of successful collisions per second (that exceed activation energy) decreases and therefore the rate of reaction decreases.

right?

Reply 398

Pride

Original post by DonAlinor

Lol, my name is alinor though I meant chemistry questions

you can answer my question if you like

Reply 399

DonAlinor

Original post by fayled

Just making sure you were ready for the tricky part of the exam which is filling in the front page.

Do keep in mind that you must write in BLOCK CAPITALS.