jamesfirst
Active Member
- Joined
- Jan 30, 2010
- Messages
- 2,005
- Gender
- Male
- HSC
- 2011
lol owned.My teacher just told me I had a bad attitude and that he didn't like me. :/
lol owned.My teacher just told me I had a bad attitude and that he didn't like me. :/
man I nearly got owned in that q.We had a question on dry cell/lead acid cell vs another cell in terms of chemistry and impact on society.
Looks good!
button cell is zinc and silver oxide.man I nearly got owned in that q.
I didnt study button cell, but I guessed the chemistry part for it. Just did redox of silver and zinc.
i had a blank and forgot my equations for the button cell in the exam.. fmlbutton cell is zinc and silver oxide.
if i remember it correctly:i had a blank and forgot my equations for the button cell in the exam.. fml
different to the one i use (button cell also).. my anode is something like: Zn + 2OH- ---> Zn(OH)2 + 2e-if i remember it correctly:
Zn -> Zn2+ + 2e-
Ag2O + H2O + 2e- -> 2Ag + 2OH-
i think your reduction equation is wrong?if i remember it correctly:
Zn -> Zn2+ + 2e-
Ag2O + H2O + 2e- -> 2Ag + 2OH-
Its the same thing. Muzeik's is just an oxidation half-equation from the table, yours just has spectator ions on either sidedifferent to the one i use (button cell also).. my anode is something like: Zn + 2OH- ---> Zn(OH)2 + 2e-
my teacher almost said the same thing, when i wanted her to sign my dropping sheet.My teacher just told me I had a bad attitude and that he didn't like me. :/
Yeah I was a bit confused.. because both are correct aren't they.. In the end I was just like wtf. and ended up putting B - which is zinc is the stronger reductant, aswell.I put Zn is stronger reductant.
its either that or H+ are stronger oxidant.
So I guessed the Zn.
Took me 5 minutes to know wtf the q. was asking me TBH.
I think I put this because the oxidiser doesn't start the reaction the reductor does. Kinda. I don't even...Yeah I was a bit confused.. because both are correct aren't they.. In the end I was just like wtf. and ended up putting B - which is zinc is the stronger reductant, aswell.
I RECKON! usually I go through MC in like 15 mins - this one took me 30 mins .. =/It was soo hard, after my first go at MC, I ticked atleast 12 questions that I made sure I look back on. Spent so much time on MC.
fucking exactly the same!!!i reckon! Usually i go through mc in like 15 mins - this one took me 30 mins .. =/
i think it's right. it doesnt have to be neutral.i think your reduction equation is wrong?
i putted H+ are stronger oxidant.I put Zn is stronger reductant.
its either that or H+ are stronger oxidant.
So I guessed the Zn.
Took me 5 minutes to know wtf the q. was asking me TBH.
Yeah I was a bit confused.. because both are correct aren't they.. In the end I was just like wtf. and ended up putting B - which is zinc is the stronger reductant, aswell.