what should i study?

[vce01]

for the first time in about 4 months im going to be spending some time on chem, the day before the exam

what do you guys reckon i should go through? so that i can somehow pull a D ;P obviously the questions that are most likely to be asked

1. equlibrium
2. ..?


thanks

[Pandemonium]

2. calorimetry
3. galvanic/electrolytic
4. acid/base equilibria
5. AWRHAOWIRHeiowhf3092qu 3r921dnh0pwafaw waeA

[lanvins]

yea i'm kind of in the same situation, but i'm not as bad, it's been like a month since i've done any chem.

[Collin Li]

5. AWRHAOWIRHeiowhf3092qu 3r921dnh0pwafaw waeA

Agreed

[Survivor]

2 months for me.

LOL 25, here I come.

[bucket]

I haven't done chem in like a month =_=...I think I'll be alright though as I have done all my homework and it's just a matter of revising. But yeah, one thing I don't understand, how do you determine which chemicals in an electrolysis cell are going to react? :S I always get fucked up with that, is there a trick to it? :S Or better yet, a proper way to work it out other than guessing?

[bec]

one thing I don't understand, how do you determine which chemicals in an electrolysis cell are going to react? :S I always get fucked up with that, is there a trick to it? :S Or better yet, a proper way to work it out other than guessing?

Highlight/circle everything that's there. So if you've got and you need to circle Ca2+, Cl-, Br-, Mg2+ and H2O then you need to just choose the top one on the left side (= best oxidant) and the bottom one on the right side (best reductant).

In this case:
- Best oxidant is water ()
- Best reductant is calcium ()

...so yes, there is way to work it out other than guessing...

[bucket]

But isn't the chemical on the left side supposed to be positioned LOWER than the one it is reacting with on the right side, like in a  / direction on the electrochemical series? Furthermore, I do all that but the problem I face is WHICH pair of chemicals to use; there is often a number of chemicals that seem to be ideal to react. I used to assume that calculating which chemicals have a smaller E^o difference would help but it doesn't always seem to work. :S
If it's still not clear what my problem is I'll post an example up later on today when I finally force myself to hit the books :S.

[gabrielle__]

But isn't the chemical on the left side supposed to be positioned LOWER than the one it is reacting with on the right side, like in a  / direction on the electrochemical series? Furthermore, I do all that but the problem I face is WHICH pair of chemicals to use; there is often a number of chemicals that seem to be ideal to react. I used to assume that calculating which chemicals have a smaller E^o difference would help but it doesn't always seem to work. :S
If it's still not clear what my problem is I'll post an example up later on today when I finally force myself to hit the books :S.

bucket im pretty sure that it goes in a \ direction.
right hand lower than left, but good luck for thursday

[bucket]

Nooooo! They go that way (\) in galvanic cells!
I'm asking about electrolytic reactions which go in the / direction.
Silly

[gabrielle__]

oh whoops
should probably read the whole thread before talking then hay!
fuccking wankwit i am !

[Collin Li]

Haha, you two have black and white avatars I feel like I'm in the 50s.