Howd you go on the chem exam?

[andy456]

Does anyone remember their CF value. i got 12494.05 J/C-1

yeah but that was the sig fig question so i put 12.5kJ/C-1

[Studyinghard]

nice and mass of lithium was 80.3 grams?

[qshyrn]

AHEM...     VCAA WOULD NOT WANNA LOOK BAD AFTER WHAT THEY WROTE LAST YEAR:  
Q5d
 "Acceptable responses included:
• fuel cells are not rechargeable"


I DID THIS EXAM JUST BEFORE GOING IN, AND I BASED MY ANSWER ON THIS!!!!!!!!!!!!!

[sajib_mostofa]

nice and mass of lithium was 80.3 grams?

Yeah

[vexx]

oh yeah i got 3.74% for the ionization now that i remember (well close enough)

and my CF was same as your studyinghard, just in kj/c

[scocliffe09]

AHEM...     VCAA WOULD NOT WANNA LOOK BAD AFTER WHAT THEY WROTE LAST YEAR:   
Q5d
 "Acceptable responses included:
• fuel cells are not rechargeable"

Yes it has to be C I think. The electrons DO pass from reductant to anode, and THEN to the cathode.
Also got 12.5kJ/C.

[10weid]

question 19 is simply FUCKIN STUPID.

coz none of the answers are right... i still maintain its D though, coz electrons always flow to the cathode :/

[Studyinghard]

i think all relevant ambiguous questions have been discussed. so its time to chillax and play same games.

[curious111]

For the assumption in question 2a iv, would they accept that the reaction would have to be taking place at 25 degrees? Because otherwise the K value for lactic acid would be different

[kenhung123]

Both are spontaneous reactions. Reductant floods e's onto the anode.

[mirra250]

AHEM...     VCAA WOULD NOT WANNA LOOK BAD AFTER WHAT THEY WROTE LAST YEAR:  
Q5d
 "Acceptable responses included:
• fuel cells are not rechargeable"

Yes it has to be C I think. The electrons DO pass from reductant to anode, and THEN to the cathode.
Also got 12.5kJ/C.

Not necessarily. What is the reductant is Fe (s)? It would be the reductant AND the anode, so the electrons couldnt pass to itself!! Question 19 is wrong. Full stop

[mustafa]

Don't Be STUPID!!!!! Electrons NEVER flow ti Anode!!! Christ!!!! This is chem...
Seriosly....
C is Most DEFINITELY wring. C States that electrines Flow from Anode to Anode.....
Thats doubly WRong...

[doter]

Does anyone remember their CF value. i got 12494.05 J/C-1

yeah but that was the sig fig question so i put 12.5kJ/C-1

For this question, was it two or three sig figure? Cause I wasn't sure if the 25atm counted as sig figures?

[Whatlol]

Does anyone remember their CF value. i got 12494.05 J/C-1

yeah but that was the sig fig question so i put 12.5kJ/C-1

For this question, was it two or three sig figure? Cause I wasn't sure if the 25atm counted as sig figures?

didnt think the 25atm matters, since it wasnt used for calculations

[8039]

oh yeah i got 3.74% for the ionization now that i remember (well close enough)

and my CF was same as your studyinghard, just in kj/c

Oh shit I got 0.01% for the lactic acid question