noooo is anyone up??

i just had a panick attack about fuel cells!
theres different equations for each terminal in each of my books

which ones right?!??

Reply 1525

CPN

1

Anyone still going? :P

Reply 1526

susan23

3

lol yaaa kindaa distracted on tsr though

Reply 1527

percy93

yepp me, can't sleep damn headache!

la la la la

anyone got any ideas on what might come up??

Reply 1530

arvin_infinity

3

Original post by susan23

la la la la

1/O2 + H2O + 2e- --------> 2OH- +0.4V
• 2H2O + 2e- --------> H2 + 2OH- -0.83V

!! so I need to memorise this. Obviously not those electrode potential!
Someone tell me what else I need to know!

SOmeone put question relevant to this
Just done
4b in jan 11
Couldnt deduce the half cell !! need someone to explain this to me!!

+Rep

Reply 1531

monkeyDace

I wanna sleeeeeep....but I sooo desperately want A aswell

I finis module1, 2 and midway 3. I started the last two yesterday evening yesterday evening, its isn't as hard as I thought or is it me getting over confident?

Reply 1532

CPN

1

Original post by monkeyDace

I wanna sleeeeeep....but I sooo desperately want A aswell

I finis module1, 2 and midway 3. I started the last two yesterday evening yesterday evening, its isn't as hard as I thought or is it me getting over confident?

LOL try doing the Jan 2011 paper after youve finished all 3 modules!

Reply 1533

darkiee

10

Original post by goldlock

You'd have to think about whether bonds are broken, or bonds are made; if broken, then it's endothermic (+ve) and if made, then exothermic (-ve) :smile:

Just think FORMATION, LATTICE ENTHALPY AND 1ST AFFINTY are negative rest are positive, that the way i get round them

HEY

Original post by monkeyDace

I wanna sleeeeeep....but I sooo desperately want A aswell

I finis module1, 2 and midway 3. I started the last two yesterday evening yesterday evening, its isn't as hard as I thought or is it me getting over confident?

It isnt hard at all, the method the question are asked is the hard bit, if you know what they are asking you had ace it

Reply 1536

Ayostunner

1

Good luck guys !

I have a funny feeling enthalpy change of solution is gonna come up,
havent seen it in a while!

Reply 1537

darkiee

10

Original post by Ayostunner

Good luck guys !

I have a funny feeling enthalpy change of solution is gonna come up,
havent seen it in a while!

LOOL so do i, goodluck AYO, bornhaber or enthalpy change of solution defo is coming, I can bet my house on that. Also essay on Transition metal, lattice eenthlapy or STANDARD ELECTRODE POTENTIAL

Reply 1538

Ayostunner

1

Original post by darkiee

LOOL so do i, goodluck AYO, bornhaber or enthalpy change of solution defo is coming, I can bet my house on that. Also essay on Transition metal, lattice eenthlapy or STANDARD ELECTRODE POTENTIAL