VCE Chemistry 2010 Unit 3 Exam Suggested Solutions

[kenhung123]

But 20.03 had a 0.06 difference with the other titres.

concordant is with 0.1
so 20.03 counts

I have never heard this, always been plus or minus 0.05!

Does it really matter, you should really just pick the 3 closest ones lol..

[Blakhitman]

It said concordant, and according to the way I was taught, they weren't concordant.

[akira88]

It said concordant, and according to the way I was taught, they weren't concordant.

I did what you did, and I was also taught that it was plus/minus 0.05.
VCAA seriously cannot take marks for us identifying a wrong concordant titre. *Whines like baby*

[crayolé]

Yeah i thought it was +-.05mL too but i was so nervous i just thought they looked close enough so i just went ahead and used the three

I'm pretty sure you'll get the mark since textbooks state the .05 rule

[akira88]

Yeah i thought it was +-.05mL too but i was so nervous i just thought they looked close enough so i just went ahead and used the three

I'm pretty sure you'll get the mark since textbooks state the .05 rule

Phew I hope so. At least that's one mark salvaged
I was really really worried today, but now I'm starting to forget about it... very slowly.... haha

[Blakhitman]

I'll be pretty upset if we didn't get the mark.

[vexx]

everyonee relax, obviously there is more then one answer for the term concordant, i've never heard of 0.1ml to be honest, but 0.02ml i've seen a few times, and 0.05ml to a lesser extent. they can't reject everything but one thing >< im pretty sure the heinemenn book isn't 0.1 either.

[Blakhitman]

Yeah I cbf caring anymore, I'm going to bed.

[akira88]

Yeah I cbf caring anymore, I'm going to bed.

Night. Me too. Realised I've lost >10 marks. Beyond caring now.
Sleep well for the GAT everyone

[kayjay]

dudes, do u think ill get the mark for 8bi for galactose?

[Mao]

The assessors (people who mark exams) will probably meet this weekend or next weekend to discuss answers. I will leak that there is at least one assessor that i know of who lurks vn. This person will probably read this threads and acknowledge the disputes over some ambiguous things, inc the concordant titre and ratio thing, and your concerns may be raised in this meeting. So not all is lost.

[cama23]

sounds good, im thinking i got around 65-69...
lets hope vcaa assessors arent tightarses.
taking marks off for writing 3/1 or 3:1 or 3 is pointless and isnt testing what you know about stochiometry...

[darkphoenix]

The assessors (people who mark exams) will probably meet this weekend or next weekend to discuss answers. I will leak that there is at least one assessor that i know of who lurks vn. This person will probably read this threads and acknowledge the disputes over some ambiguous things, inc the concordant titre and ratio thing, and your concerns may be raised in this meeting. So not all is lost.

Any chance of pity marks? LOL

[phoebeshiu]

But if everyone gets pity marks then it makes no difference.
Time to start Unit 4 and work harder for that exam.

[darkphoenix]

Haha true that.