AQA A2 Chemistry Practical 21st May 2009

Hey!! Im doing it!!

Really doing in my pants right now - so scared!!! ((

I think Test tube reactions will come up and maybe finding the rate of reaction or organic preparation for planning... Lets hope for these as im revising for these...

Yeah Analysing part will kill me straight away. I suck at it. Only if its Ka and Kc i can kind of cope... Maybe...

Good luck!!

Yay someone else who is doing it! yeah i think might be reactions could come up, because it's been titration the past couple of years, which means they could ask titration in the other bits, and yeah you're right organic synthesis could come up in the plan because thats the only place they could really ask you about it.

I'm going to just go through the past papers, the planning for some of them have been a same. I've done up rough plans for the final section on the ones that have come up.

I wish i had more time for it though, i've been wasting too much time trying to learn for the crappy bio exam i got tomorrow

This is gonna sound really stupid but what do you mean by organic synthesis?

Haha because its an evil organisation intent on killing off all our braincells and then laughing evilly.

And Im going to do model answers for each planning question ever tomorrow. I suggest you try and do the same cos it really helps.

Have fun. I am. SO MUCH FUN.

Yeah I think I'm gonna start that now just one more thing, does this mean we need to know the procedure for making asprin like off by heart?

Well it will help for one of the sections of the question. Just learn the basic procedure, synthesis and then collection and purification. Especially the latter. It just will be easier for you to just list everything rather than guess and confuse yourself and waste time.

Implementation : Reactions of some organic compounds
Analysis & Evaluation : Determination of the percentage of Fe2+ in a mixture of Fe2+ and Fe3+ using potassium dichromate
Planning: Something to do with an acid

This is my guess for whats comming up, i reckon and analysis & evaultion could either be what i had above of an Acid question and vice versa.

This is so very true, I've just see the procedure and I know it thankgod. It's one of the things that's stuck in my head funnily enough.
I'm just trying to figure out how to work out theoretical mass now, any help on that it's the calculations which I suck at

Implementation : Reactions of some organic compounds
Analysis & Evaluation : Determination of the percentage of Fe2+ in a mixture of Fe2+ and Fe3+ using potassium dichromate
Planning: Something to do with an acid

This is my guess for whats comming up, i reckon and analysis & evaultion could either be what i had above of an Acid question and vice versa.

I havent actually done the exercises yet. *tomorrow is my day* Im revising for physics right now.

However: for mass - always look at what you're given. Are you doing exercise 5? The phenyl... blah blah one??

ALWAYS work out moles first!! It says that 1g of phenyl ammonium chloride is used. So use mol = mass/Mr. You know mass, you know Mr.

When you have moles, these are the same for the phenyl ethanamide as its equimolar quantities. So you do mass = mol * Mr.

Did that help? If not - ask away.