CSSA chemistry (1 Viewer)

[_deloso]

i think it's right. it doesnt have to be neutral.



i putted H+ are stronger oxidant.

if i remember it right, the cathode produces the hydrogen gas. so the hydrogen has must be a stronger oxidant than the solution's ion (i forgot what is it).

cathode produces hydrogen gas but hydrogen gas is made through 2H+ and 2e- and those electrons came from Zinc thus zinc acting as a reductant to initialise the reaction

 

[muzeikchun852]

cathode produces hydrogen gas but hydrogen gas is made through 2H+ and 2e- and those electrons came from Zinc thus zinc acting as a reductant to initialise the reaction

but in order to choose the answer that zinc is a stronger reductant, shouldnt there be some changes in the anode (i.e. loss of zinc metal)? but i dont think there was any change in the zinc anode (please someone confirm that. im not really sure). so we can only conclude that hydrogen ion are the stronger oxidant (?)

ps. i dont think there is different between where it initalise the reaction, because it is a galvanic cell (?) or electrochemical (?)

edit : it should galvanic as zinc has a lower standard potential.

 

[Dylanamali]

but in order to choose the answer that zinc is a stronger reductant, shouldnt there be some changes in the anode (i.e. loss of zinc metal)? but i dont think there was any change in the zinc anode (please someone confirm that. im not really sure). so we can only conclude that hydrogen ion are the stronger oxidant (?)

ps. i dont think there is different between where it initalise the reaction, because it is a galvanic cell (?) or electrochemical (?)

edit : it should galvanic as zinc has a lower standard potential.

Hmm, do you remember the exact question?

 

[muzeikchun852]

Hmm, do you remember the exact question?

not really. that's why I have question marks everywhere so someone can confirm it.

 

[Effekt]

Any tips/focus topics? I'm doing this exam tomorrow and from what i've read i should focus on equilibrium, acids & bases, Haber process and galvanic cells?

 

[MagnificentOne]

Any tips/focus topics? I'm doing this exam tomorrow and from what i've read i should focus on equilibrium, acids & bases, Haber process and galvanic cells?

you sitting the CSSA paper?

 

[Effekt]

you sitting the CSSA paper?

I'm not 100% sure but the teacher said the paper was purchased and told us we should know our experiments/equilibrium. He tends to remove questions he considers stupid and replaces them but i can only assume it's the CSSA paper.

Edit: I don't think it's the CSSA paper since i don't go to a catholic school, religion isn't even considered. However i guess there is a possibility of the catholic paper.

 

[MagnificentOne]

You don't have to be in a catholic school to do the CSSA paper you know...

 

[Dylanamali]

I'm not 100% sure but the teacher said the paper was purchased and told us we should know our experiments/equilibrium. He tends to remove questions he considers stupid and replaces them but i can only assume it's the CSSA paper.

Edit: I don't think it's the CSSA paper since i don't go to a catholic school, religion isn't even considered. However i guess there is a possibility of the catholic paper.

most likely independent paper.. schools don't sit CSSA papers after the security date.. because student's can cheat.

 

[Effekt]

most likely independent paper.. schools don't sit CSSA papers after the security date.. because student's can cheat.

Yeah you're right but i guess tomorrow i will know, i am leaning more towards independent now.

 

[MagnificentOne]

brace yourself lad, the independant paper is much harder than the CSSA one i'll tell you that!

 

[Effekt]

I've always been told CSSA ones were harder. But then again i am prepared to get hammered knowing my teacher, he is evil on purpose.

 

[MagnificentOne]

I've always been told CSSA ones were harder. But then again i am prepared to get hammered knowing my teacher, he is evil on purpose.

wrong wrong wrong!

 

[Effekt]

wrong wrong wrong!

Great now my stress level has increased!!

 

[RandoM_TerroR]

lol he is 'just sayin.'

 

[RandoM_TerroR]

you should really be studying.
Get off BoS!

 

[Aquawhite]

Yeah, there is that little thing called the HSC - but it's pretty late to be up study (but I think that's just me being adjusted to early morning and early nights).

 

[jamesfirst]

Nah it's not harder. They're the same shit....

 

[khorne]

doing the indie chem tomorrow br8s, I know all da shit, just have to memorise some random things like a scientist and dry cell vs something else. Also, fat dan, you'd be pleased to know your notes seem to be popular in my school.

 

[Some Vunt]

doing the indie chem tomorrow br8s, I know all da shit, just have to memorise some random things like a scientist and dry cell vs something else. Also, fat dan, you'd be pleased to know your notes seem to be popular in my school.

You mean today?
Go to fuckin' sleep!!!
Dan made chem notes? Are they the ones with orange dotpoints? Worst colour scheme ever. No offence Dan.