Q14 in multiple choice?? (3 Viewers)

[ay_caramba]

what was the answer?
i put (a) after half trying to figure it out and half guessing

 

[Plebeian]

I put (a) as well, figuring that whichever one is on the anode is oxidising easily.

 

[CharlieB]

ppl seem to have gotten a or d

i put a

 

[sneeble]

I'm pretty sure it was A, but the MC answers thread is making me doubt myself :\

I could post my explanation but I'll wait for someone who actually has their wits about them to post.

[edit]

All wrong

 

[bloodysunday]

I put (B), i guessed that because z made heaps of voltage that meant that it oxidized easiest, and pb was crap at oxidising, so yeah

Lol it seems that i am sh*t

 

[euphoric]

hmmz i put D...
i guessed.
increasing ease..
so is that smallest to greatest ease?
or greater to smaller ease?

 

[stevenwong86]

isnt it D?

Because the one on the negative electrode is the one where electrons are being released, which is oxidation. So I figured that the one on the negative electrode oxidised more easily. And it said in "increasing" order. So the least was on the left.

Can somebody smart and good at chem plesase confirm this?

 

[bloodysunday]

smallest to greatest ability to oxidise

 

[xeriphic]

it's d lol I put a but read the question carefully

 

[omg_a]

i put d . hmmm

 

[bloodysunday]

ok, now im confused. and im also wrong, i think it shoulda been d... *smashes head on table*

 

[sneeble]

Ahh fuckballs.

I get it now. It's D

 

[Tommy_Lamp]

I got D, I wont explain it but you had to use the standard potentials table.

 

[shoelace]

Ahh fuckballs.

I get it now. It's D

mahahaha.. that's funny. fuckballs

 

[Komaticom]

I chose A. Bah!

 

[xxxcaixxx]

The "answer" is D....if they ask reduction. The answer is A

 

[tennille]

i got d as well

 

[LSP]

i changed it to D last minute...i thought it might be a trick question
i hope is rite

 

[Managore]

Arg can someone PLEASE put up a proper explination as to why it is A or D. I said A because I thought X was the most oxidised, though since it's negative.. ah stuff it, someone else explain it please!

 

[boutfiddy]

my reasoning was:
negative terminal is the anode where oxidation occurs so from standard table of reductions x has reduction potential of 0.22 V and oxidising potential of -0.22 V. from same sort of thing y has oxidation potential of 0.97 and z has 2.47 so puting them in increasing order gives d